Spacing on mobile version bootstrap 4.2.1 - html

I've got some weird spaces in the mobile version, here some images:
Here's how does it look on desktop:
Desktop #01
Desktop #02
And a mobile:
Mobile #01 - with spacing on the right
Mobile #02 - with a "h3 class="display-4" maybe calling that spacing?
HTML:
<!-- The beginning of html -->
<!DOCTYPE HTML>
<html lang="PL-pl">
<head>
<title>The page is being rebuilt...</title>
<meta charset="utf-8">
<!-- versioning can often help (href="css/style.css?ver=2.0") -->
<!-- BOOTSTRAP 4 -->
<meta name="viewport" content="width=device-width, initial-scale=1.0, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<link rel="stylesheet" href="https://reportsquestionsznaczki65.000webhostapp.com/css/restyled.css">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
</head>
<body>
<main>
<div class="jumbotron jumbotron-fluid text-white text-center bg-info nomarginbottom">
<div class="container">
<h3 class="display-2">This site is being finally rebuilt!</h3>
<p class="lead">Hence it will have more features soon.</p>
</div>
</div>
<div class="container-fluid">
<div class="row mt-3 text-center">
<div class="col-12">
<h3 class="display-4">Sites done:</h3>
</div>
</div>
<div class="row justify-content-center mt-2 text-white text-center mb-4">
<div class="col-12 col-lg-4">
<a class="websitelink" href="https://reportsquestionsznaczki65.000webhostapp.com/wszyscy.html">
<div class="box lead p-4">Go to: "WSZYSCY"</div>
</a>
</div>
</div>
<div class="row text-center">
<div class="col-12 change"><h4 class="display-4">What will be changed?</h4></div>
</div>
<div class="text-center">
<div class="row change2">
<p class="col-sm-6 col-lg-3 feature lead">The structure of the page.</p> <!-- class feature not used -->
<p class="col-sm-6 col-lg-3 feature lead">The site will be now responsive.</p>
<p class="col-sm-6 col-lg-3 feature lead">Lessons will be adding automatically via JS.</p>
<p class="col-sm-6 col-lg-3 feature lead">More code, more readable..</p>
</div>
<div class="row change2">
<div class="col-sm-6 col-lg-3 feature lead"><p>Sleek look.</p></div>
<div class="col-sm-6 col-lg-3 feature lead"><p>Fast and comprehensive.</p></div>
<div class="col-sm-6 col-lg-3 feature lead"><p>Inspiring quotes.</p></div>
<div class="col-sm-6 col-lg-3 feature lead"><p>And much more...</p></div>
</div>
</div>
<div class="row change2">
<div class="col-12">
<h5 class="text-center border border-3 border-dashed border-info change3 nomarginbottom">
<q>You can do everything, unless your imagination has stopped you.</q>
</h5>
</div>
</div>
<div class="row change2">
<div class="col-12">
<h3 class="display-4 text-center nomarginbottom">Current status: Learning Bootstrap 4.2 (80%) + Added "wszyscy.html".</h3>
<p class="lead text-center nomarginbottom">Overall status: 5% done on the page.</p>
</div>
</div>
<div class="row mb-5">
<div class="col-12">
<h5 class="text-center border border-3 border-dashed border-info change3 nomarginbottom">
<q>Change is best, when it's changing with you, not without.</q>
</h5>
</div>
</div>
</div>
</main>
<noscript>
<meta http-equiv="refresh" content="0; URL=https://reportsquestionsznaczki65.000webhostapp.com/noscript.html"/>
</noscript>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
</body>
</html>
CSS (restyled.css):
body {
background-color: #eee;
}
/* Rebuilding the page */
.change {
padding: 30px 10px;
background-color: #dedede;
}
.change2 {
padding: 15px 5px;
}
.change3 {
padding: 20px 5px;
}
.nomargin {
margin: 0;
}
.nomarginbottom {
margin-bottom: 0;
}
img[alt="www.000webhost.com"] {
display: none;
}
.border-3 {
border-width: 3px !important;
}
.border-dashed {
border-style: dashed !important;
}
.websitelink, .websitelink:hover {
text-decoration: none;
color: #FFF;
}
.box {
background-color: #343a40;
font-size: 170%;
}
.box:hover {
background-color: darkslategray;
cursor: pointer;
}
Here's the website :
https://reportsquestionsznaczki65.000webhostapp.com
Due to it's online you can use:
view-source:https://reportsquestionsznaczki65.000webhostapp.com/index.html
https://reportsquestionsznaczki65.000webhostapp.com/css/restyled.css
Thank you for any help.

The text "wszyscy.html" in the mobile version is bigger than the screen due to its font-size . Make that smaller and you will no longer see that space

Related

How do I make my website look better on mobile devices?

I created a basic website to improve my front-end skills. I used Bootstrap 5 to make it responsive but it does not look good on the phone. Can somebody tell me what I did wrong? On my mobile device, it looks like this :
enter image description here
When I decreased the size of the browser, it looked good, but when I put it online on github, it looks like the page has been cut.
Html :
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Ping</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<link rel="stylesheet" type="text/css" href="style.css">
<link href="/fontawesome-free-5.15.4-web/fontawesome-free-5.15.4-web/css/all.css" rel="stylesheet">
<link href="/fontawesome-free-5.15.4-web/fontawesome-free-5.15.4-web/svgs/brands/" rel="stylesheet">
<link href="/fontawesome-free-5.15.4-web/fontawesome-free-5.15.4-web/svgs/regular/" rel="stylesheet">
<link href="/fontawesome-free-5.15.4-web/fontawesome-free-5.15.4-web/svgs/solid/" rel="stylesheet">
<script src="https://kit.fontawesome.com/9b452e5ad1.js" crossorigin="anonymous"></script>
</head>
<body style="overflow-x: hidden;">
<div class="row">
<div class="col d-flex justify-content-center pt-2">
<img src="./images/logo.svg">
</div>
</div>
<div class="row">
<div class="col d-flex justify-content-center flex-row pt-4">
<h1 class="text-muted font-weight-normal">We are launching<span class="text-black"> soon!</span></h1>
</div>
</div>
<div class="row">
<div class="col d-flex justify-content-center">
<span class="text-black">Subscribe and get notified</span>
</div>
</div>
<div class="row">
<div class="col d-flex justify-content-center pt-5">
<div>
<form class="d-flex flex-row">
&nbsp<input class="form-control" id="email" placeholder="Your email adress...">&nbsp
<button type="button" id="submit">Submit</button>
</form>
<p class="container-fluid firstp"></p>
</div>
</div>
</div>
<div class="row">
<div class="col d-flex justify-content-center">
<img src="./images/illustration-dashboard.png" class="img.fluid imgdash">
</div>
</div>
<footer class="row">
<div class="col d-flex justify-content-center flex-row pt-5">
<i class="fab fa-facebook"></i>&nbsp&nbsp
<i class="fab fa-twitter"></i>&nbsp&nbsp
<i class="fab fa-instagram"></i>
</div>
<div class="container d-flex justify-content-center">
<p>© Copyright Ping. All rights reserved.</p>
</div>
</footer>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>
<script src="script.js"></script>
<script src="https://kit.fontawesome.com/9b452e5ad1.js" crossorigin="anonymous"></script>
</body>
</html>
css:
#email{
border-top-left-radius: 25px;
border-top-right-radius: 25px;
border-bottom-left-radius: 25px;
border-bottom-right-radius: 25px;
width: 330px;
height: 45px;
border-color: gainsboro;
}
#submit{
border-top-left-radius: 25px;
border-top-right-radius: 25px;
border-bottom-left-radius: 25px;
border-bottom-right-radius: 25px;
width: 150px;
height: 48px;
background-color: blue;
color: white;
border: none;
}
#submit:hover{
background-color: rgb(124, 111, 204);
}
.firstp{
padding-right: 55px;
}
.imgdash{
width: 100%;
max-width: 400px;
height: auto;
}
Add flex-wrap and justify-content-center class on form element, will resolve your issue. Also add mb-2 class on both input and button element.
Below code snippet also updated and i hope it'll resolve your issue. Thank You
#email {
border-top-left-radius: 25px;
border-top-right-radius: 25px;
border-bottom-left-radius: 25px;
border-bottom-right-radius: 25px;
width: 330px;
height: 45px;
border-color: gainsboro;
}
#submit {
border-top-left-radius: 25px;
border-top-right-radius: 25px;
border-bottom-left-radius: 25px;
border-bottom-right-radius: 25px;
width: 150px;
height: 48px;
background-color: blue;
color: white;
border: none;
}
#submit:hover {
background-color: rgb(124, 111, 204);
}
.firstp {
padding-right: 55px;
}
.imgdash {
width: 100%;
max-width: 400px;
height: auto;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Ping</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<link rel="stylesheet" type="text/css" href="style.css">
<link href="/fontawesome-free-5.15.4-web/fontawesome-free-5.15.4-web/css/all.css" rel="stylesheet">
<link href="/fontawesome-free-5.15.4-web/fontawesome-free-5.15.4-web/svgs/brands/" rel="stylesheet">
<link href="/fontawesome-free-5.15.4-web/fontawesome-free-5.15.4-web/svgs/regular/" rel="stylesheet">
<link href="/fontawesome-free-5.15.4-web/fontawesome-free-5.15.4-web/svgs/solid/" rel="stylesheet">
<script src="https://kit.fontawesome.com/9b452e5ad1.js" crossorigin="anonymous"></script>
</head>
<body style="overflow-x: hidden;">
<div class="row">
<div class="col d-flex justify-content-center pt-2">
<img src="./images/logo.svg">
</div>
</div>
<div class="row">
<div class="col d-flex justify-content-center flex-row pt-4">
<h1 class="text-muted font-weight-normal">We are launching<span class="text-black"> soon!</span></h1>
</div>
</div>
<div class="row">
<div class="col d-flex justify-content-center">
<span class="text-black">Subscribe and get notified</span>
</div>
</div>
<div class="row">
<div class="col d-flex justify-content-center pt-5">
<div>
<form class="d-flex flex-row flex-wrap justify-content-center">
&nbsp<input class="form-control mb-2" id="email" placeholder="Your email adress...">&nbsp
<button class="mb-2" type="button" id="submit">Submit</button>
</form>
<p class="container-fluid firstp"></p>
</div>
</div>
</div>
<div class="row">
<div class="col d-flex justify-content-center">
<img src="./images/illustration-dashboard.png" class="img.fluid imgdash">
</div>
</div>
<footer class="row">
<div class="col d-flex justify-content-center flex-row pt-5">
<i class="fab fa-facebook"></i>&nbsp&nbsp
<i class="fab fa-twitter"></i>&nbsp&nbsp
<i class="fab fa-instagram"></i>
</div>
<div class="container d-flex justify-content-center">
<p>© Copyright Ping. All rights reserved.</p>
</div>
</footer>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>
<script src="script.js"></script>
<script src="https://kit.fontawesome.com/9b452e5ad1.js" crossorigin="anonymous"></script>
</body>
</html>
What I can see is you are using a lot of .col . You need to specify .col for small and large devices. Otherwise some of it's function will break. Take a look at this link:
https://getbootstrap.com/docs/5.0/layout/columns/#column-breaks
You see in this link that there are many sm modifier used. Use them and you can see some results.

Unable to get a responsive webpage using bootstrap.Unable to get responsive layout using containers and columns

I am quite new to this and I've already tried on containers and rows and have divided the columns accordingly as required. The current outline gets me a fine webpage on my pc but I am still not getting a responsive page. I know giving media tags could resolve the issue, but I am trying bootstrap v4.6.
<!DOCTYPE html>
<!--Building a github page-->
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap#4.6.0/dist/css/bootstrap.min.css" integrity="sha384-B0vP5xmATw1+K9KRQjQERJvTumQW0nPEzvF6L/Z6nronJ3oUOFUFpCjEUQouq2+l" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" integrity="sha512-SfTiTlX6kk+qitfevl/7LibUOeJWlt9rbyDn92a1DqWOw9vWG2MFoays0sgObmWazO5BQPiFucnnEAjpAB+/Sw==" crossorigin="anonymous" referrerpolicy="no-referrer" />
<STYLE>
body{
background-color:#a9ba9d;
}
.box{
background-color: #36454f;
margin-bottom: 90px;
}
.fa{
color:white;
padding:15px;
}
.text-center{
padding-left:650px;
color:white;
}
.box2{
background-color:#343434;
margin-top:50px;
margin-left:200px;
padding: 100px 400px 10px 200px;
border-radius:25px;
height: 190px;
}
.boxpart{
background-color:#343434;
padding-bottom:500px;
border-radius:25px;
margin-right: 50px;
width:300px
}
.small-box{
background-color:#343434;
margin:20px;
margin-top: 80px;
padding:70px 0px 50px 0px;
border-radius:25px;
}
.small-box1{
background-color:#343434;
margin:20px;
margin-left:125px;
margin-top:80px;
padding:40px 0px 50px 0px;
border-radius:25px;
}
input{
background-color:#343434;
margin-left:250px;
padding: 2px 2px 2px 5px;
border-radius:10px;
width: 500px;
}
input::placeholder{
color:grey
}
.row{
width:900px;
}
</STYLE>
</head>
<body>
<div class="box">
<span class="fa fa-github fa-2x" ></span>
<span class="text-center">GITHUB</span>
</div>
<div class="container">
<div class="row">
<div class="col-sm-3 col-md-3 col-lg-3">
<div class="text-centre boxpart">
</div>
</div>
<div class="col-sm-9 col-md-9 col-lg-9">
<input type="text" placeholder="Search">
<div class="row">
<div class="col-sm-3 col-md-3 col-lg-3 small-box1"></div>
<div class="col-sm-3 col-md-3 col-lg-3 small-box"></div>
<div class="col-sm-3 col-md-3 col-lg-3 small-box"></div>
<div class="col-sm-6 col-md-6 col-lg-6 box2"></div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
You have specified the width for several elements. When you set a fixed width on things, they can't be responsive. The .boxpart div will always be 500px wide, so it will overflow on devices smaller than 500px wide. You have also overridden the width of the .row class that comes from Bootstrap and set it at a fixed width. So that also cannot be responsive. It also looks to me like you have some extra s in the right section.
Bottom line here: don't fight the framework. Use what it gives you.
Here's a five-minute clean up of what you have. There's still work to do (like putting your header in a ), so take a look at the bootstrap docs and dig in.
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap#4.6.0/dist/css/bootstrap.min.css" integrity="sha384-B0vP5xmATw1+K9KRQjQERJvTumQW0nPEzvF6L/Z6nronJ3oUOFUFpCjEUQouq2+l" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" integrity="sha512-SfTiTlX6kk+qitfevl/7LibUOeJWlt9rbyDn92a1DqWOw9vWG2MFoays0sgObmWazO5BQPiFucnnEAjpAB+/Sw==" crossorigin="anonymous" referrerpolicy="no-referrer" />
<STYLE>
body{
background-color:#a9ba9d;
}
.box{
background-color: #36454f;
}
.boxpart{
background-color:#343434;
border-radius:25px;
}
.small-box{
background-color:#343434;
border-radius:25px;
}
input{
background-color:#343434;
border-radius:10px;
}
input::placeholder{
color:grey
}
</STYLE>
</head>
<body>
<div class="box mb-5 text-white">
<i class="fa fa-github fa-2x p-2" ></i>
<span>GITHUB</span>
</div>
<div class="container">
<nav>
</nav>
<div class="row">
<div class="col-md-3">
<div class="text-center boxpart p-5 text-white">
<p>left box</p>
<p>left box</p>
<p>left box</p>
<p>left box</p>
</div>
</div>
<div class="col-md-9 mt-3 mt-md-0">
<div class="row ">
<div class="col-12">
<input type="text" class="p-1 w-100" placeholder="Search"/>
</div>
</div>
<div class="row mt-2 mx-0">
<div class="col small-box py-5 text-white text-center">test</div>
<div class="col small-box py-5 text-white text-center">test</div>
<div class="col small-box py-5 text-white text-center">test</div>
</div>
</div>
</div>
</div>
</body>
</html>
try not to use class named row when you also use the built in row in bootstrap to avoid problems, also the grid system in bootstrap works in 12 columns where for example if one div is col-lg-8 and you have 2 divs the other should be col-lg-4 so it can be 12 together.
I also recommend you reading this doc in there official website
https://getbootstrap.com/docs/4.1/layout/grid/
First of all you have some div tag in excess.
Then you have to study the bootstrap breakpoints here : [https://getbootstrap.com/docs/4.6/layout/overview/#responsive-breakpoints][1]
If you want the content in columns for mobile you need to add 'col-12' in all your div.
Example:
<div class="row">
<div class="col-sm-3 col-md-3 col-lg-3">
<div class="text-centre boxpart"></div>
</div>
<div class="col-sm-9 col-md-9 col-lg-9">
<input type="text" placeholder="Search">
<div class="row">
<div class="col-12 col-sm-3 col-md-3 col-lg-3 small-box1"></div>
<div class="col-12 col-sm-3 col-md-3 col-lg-3 small-box"></div>
<div class="col-12 col-sm-3 col-md-3 col-lg-3 small-box"></div>
<div class="col-12 col-sm-6 col-md-6 col-lg-6 box2"></div>
</div>
</div>
</div>
I hope it was helpful

Bootstrap 4 - how to make scrollspy work without using nav or list-group?

Is there a way to make scrollspy work without using nav or list-group?
Bootstrap documentation for scrollspy states that it may be used only on nav or list group components. DOCUMENTATION
How it works
Scrollspy has a few requirements to function properly:
If you’re building our JavaScript from source, it requires util.js.
It must be used on a Bootstrap nav component or list group.
Scrollspy requires position: relative; on the element you’re spying on, usually the <body>.
When spying on elements other than the <body>, be sure to have a height set and overflow-y: scroll; applied.
Anchors (<a>) are required and must point to an element with that id.
This question is similar, but for Bootstrap 3 (not 4) and the answer is to add role="tablist". Well, it doesn't work here. There are many questions on SO about scrollspy, but mostly for Bootstrap 3.
CODE:
/*DEMO*/
nav{top:50%;left:1.5rem;transform:translateY(-50%)}
nav a{display:block;width:20px;height:20px;margin-bottom:.5rem}
/*COLORS*/
nav a{background:black}
nav a.active{background:red}
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
</head>
<body data-spy="scroll" data-target="#nav" data-offset="0">
<section class="container-fluid">
<div class="row">
<div id="item-1" class="col-12 vh-100 bg-primary"></div>
<div id="item-2" class="col-12 vh-100 bg-warning"></div>
<div id="item-3" class="col-12 vh-100 bg-danger"></div>
<div id="item-4" class="col-12 vh-100 bg-success"></div>
<div id="item-5" class="col-12 vh-100 bg-info"></div>
</div>
</section>
<nav id="nav" class="d-flex flex-column position-fixed">
</nav>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.bundle.min.js"></script>
</body>
</html>
You can overcome this by using the required class list-group-item and reset the CSS like you want:
/*DEMO*/
nav {
top: 50%;
left: 1.5rem;
transform: translateY(-50%)
}
#nav a {
display: block;
width: 20px;
height: 20px;
margin-bottom: .5rem;
padding: 0;
border: none;
border-radius: 0;
}
/*COLORS*/
#nav a {
background: black
}
#nav a.active {
background: red
}
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
</head>
<body data-spy="scroll" data-target="#nav" data-offset="0">
<section class="container-fluid">
<div class="row">
<div id="item-1" class="col-12 vh-100 bg-primary"></div>
<div id="item-2" class="col-12 vh-100 bg-warning"></div>
<div id="item-3" class="col-12 vh-100 bg-danger"></div>
<div id="item-4" class="col-12 vh-100 bg-success"></div>
<div id="item-5" class="col-12 vh-100 bg-info"></div>
</div>
</section>
<nav id="nav" class="d-flex flex-column position-fixed">
</nav>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.bundle.min.js"></script>
</body>
</html>

Bootstrap 4 change col position on differents sizes

I'm trying to display 3 cols in a different order and position, on display bigger or smaller then the "md" breakpoint.
On > md layout, the col "A" "B" should be one above the other, while the col "C" should be on the right of both of them.
On < md layout the col "A" should be 100% large, while the "B" and "C" should be on the same row.
I tried so far most of combination of bootsrap classes (for row and col), but haven't figured out how to reach this behaviour.
Attacched an image to better explain the question.
Using Bootstrap 4 do something like this...
.border-div {
margin: 5px;
border: 4px solid;
min-height: 100px;
}
.c-div-block {
max-width: calc(100% - 10px);
max-height: calc(100% - 25px);
}
.border-div.normal-span {
line-height: 100px;
}
.border-div.expanded-span {
line-height: 200px;
}
<!DOCTYPE HTML>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" />
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49"
crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
crossorigin="anonymous"></script>
</head>
<body>
<div class="container-fluid my-5">
<div class="row no-gutters position-relative py-2">
<div class="col-12 col-md-9 order-first order-md-first">
<div class="border-div border-dark text-center normal-span">A</div>
</div>
<div class="col-6 col-md-9 order-2 order-md-last">
<div class="border-div border-danger text-center normal-span">B</div>
</div>
<div class="position-absolute offset-md-9 col-md-3 order-md-2 h-100 d-none d-md-block">
<div class="border-div border-success h-100 c-div-block text-center expanded-span">C</div>
</div>
<div class="col-6 order-last d-block d-md-none">
<div class="border-div border-success text-center normal-span">C</div>
</div>
</div>
</div>
</body>
</html>
Note: div width and height may differ as per your requirement, so do the adjustment on you own.
Hope it will help many one.

Justify content block bootstrap 4

I have this code:
.banner {
background: #f9f9f9;
width: 300px;
height: 60px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<section class="banners mb-4">
<div class="container">
<div class="d-flex justify-content-between">
<div class="banner"></div>
<div class="banner"></div>
<div class="banner"></div>
</div>
</div>
</section>
I need on mobile and tablets display: block these elements banner with spacing. How I can do it with flex? Now I get elements on inline.
Based on viewport you could use this d-* classes
So this
<div class="d-flex justify-content-between">
would be
<div class="d-lg-flex justify-content-between">
This will make .banner block(the default behavior of div) till large viewport
You can change the direction on small screen (https://getbootstrap.com/docs/4.2/utilities/flex/#direction)
.banner {
background: red;
border:1px solid;
min-height: 60px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<section class="banners mb-4">
<div class="container">
<div class="d-flex flex-column flex-sm-row justify-content-between">
<div class="banner col m-2"></div>
<div class="banner col m-2"></div>
<div class="banner col m-2"></div>
</div>
</div>
</section>