I put a frame and a picture together but my photo is not fully displayed, and in each size a part of the image is displayed, for example, for a mobile phone, only a small part of it is displayed, and in a larger and medium size, a larger part of the photo is displayed. can you help me?
My html markup:
<!-- about section -->
<section id="about" class="bg-secondary">
<div class="container-fluid">
<div class="row">
<!-- about img column -->
<div class="col-md-6 about-picture height-80 img-responsive "></div>
<!-- about text column -->
<div class="col-md-6 about-text height-80 px-5 d-flex align-items-center justify-content-center">
<!-- this is for centering -->
<div class="about-text-center">
<!-- title -->
<div class="row">
<div class="col text-center">
<h1 class="display-4 text-uppercase text-dark mb-0"><strong>about</strong></h1>
<div class="title-underline bg-warning"></div>
<p class="mt-2 text-capitalize">hi it is a test</p>
</div>
</div>
<!-- end of title -->
<!-- single item -->
</div>
</div>
</div>
</div>
</section>
This is my CSS:
body {
font-family: 'Roboto', sans-serif;
}
.height {
min-height: 100vh;
}
.title-underline {
width: 200px;
height: 5px;
margin: 0 auto;
}
.height-80 {
min-height: 100vh;
}
.height-11 {
max-height: 11vh;
}
.about-picture {
background: url("https://cdn.mos.cms.futurecdn.net/6t8Zh249QiFmVnkQdCCtHK.jpg");
}
You can use background image as you have done, but you need to give it a size and position, and stop it repeating, otherwise it is just picking up the defaults for these values.
Here is what to put in your CSS. I have deliberately explicitly set each value so it's easier to see what is going on:
.about-picture {
background-image: url("https://cdn.mos.cms.futurecdn.net/6t8Zh249QiFmVnkQdCCtHK.jpg");
background-size: contain;
background-repeat: no-repeat;
background-position: center center;
}
Of course, you may want to change the positioning, but the size contain makes sure the whole image is always visible whatever the actual dimensions of the column on any device.
After I see your code, maybe I don't think you can put the image in the css if it's used like that. I changed your code in the css section in .about-picture.
And I also changed the html markup in this section:
<div class="col-md-6 about-picture">
<img src="https://cdn.mos.cms.futurecdn.net/6t8Zh249QiFmVnkQdCCtHK.jpg">
</div>
Like this edited from me:
<html>
<head>
<meta charset="UTF-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<meta http-equiv="X-UA-Compatible" content="ie=edge"/>
<script src="https://code.jquery.com/jquery-3.5.1.js"></script>
<style>
body{
font-family: 'Roboto', sans-serif;
width: 100%;}
.height{
min-height: 100vh;}
.title-underline{
width: 200px;
height: 5px;
margin: 0 auto;}
.height-80{
min-height: 100vh;}
.height-11{
max-height: 11vh;}
.about-picture{
align-items: center!important;
}
.about-picture img{
width: 100%;
position: relative;
padding-top: 120px;
}
</style>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap#4.5.3/dist/css/bootstrap.min.css" integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"></script>
<title>Document</title>
</head>
<body>
<!-- about section -->
<section id="about" class="bg-secondary">
<div class="container-fluid">
<div class="row">
<!-- about img column -->
<div class="col-md-6 about-picture">
<img src="https://cdn.mos.cms.futurecdn.net/6t8Zh249QiFmVnkQdCCtHK.jpg">
</div>
<!-- about text column -->
<div class="col-md-6 about-text height-80 px-5 d-flex align-items-center justify-content-center">
<!-- this is for centering -->
<div class="about-text-center">
<!-- title -->
<div class="row">
<div class="col text-center">
<h1 class="display-4 text-uppercase text-dark mb-0"><strong>about</strong></h1>
<div class="title-underline bg-warning"></div>
<p class="mt-2 text-capitalize">hi it is a test</p>
</div>
</div>
<!-- end of title -->
<!-- single item -->
</div>
</div>
</div>
</div>
</section>
</body>
</html>
Related
I'm working on a site for a class project and everything is working fine except when I tried to make the footer sticky the sidebar overlaps the footer when content is added dynamically.
I have the sidebar height set to 90vh because I could not figure out how to get the background color to take up the full height of the sidebar when there was no content I set the sidebar overflow to auto which was working fine but when I try to make the footer sticky it works find until the content grows to big. Scrollbars do appear but the sidebar overlaps the footer.
Here is the html & css:
body {
display: flex;
min-height: 100vh;
flex-direction: column;
}
main {
flex: 1 0 auto;
}
.main-image {
background-image: url(../images/crypto.jpg);
background-repeat: no-repeat;
height: 90vh;
max-width: 100%;
clip: rect(0, 400px, 200px, 0);
}
.sidebar {
height: 90vh;
overflow: auto;
}
footer {
position: fixed;
bottom: 0;
left: 0;
width: 100%;
}
<!DOCTYPE html>
<html>
<head>
<title>Crypto & Cocktails </title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Compiled and minified CSS -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css">
<link rel="stylesheet" href="./assets/css/style.css">
<link rel="icon" href="./assets/images/favicon.ico">
</head>
<body>
<!-- header -->
<header id="top">
<div class="row">
<div class="col s12 center #26a69a teal lighten-1">
<img src="assets/images/cryptococktailsheader.jpg" class="responsive-img" alt="Crypto & Cocktails" />
</div>
</div>
</header>
<main>
<div class="row">
<!-- sidebar -->
<div class="col s12 l2 #00695c teal darken-3 sidebar">
<span class="flow-text center">
<h5 class="white-text">Search Coinbase</h5>
<form id="coin-search" action="">
<input id="coin-input" type="text" class="white" name="coin-input"
placeholder="Cryptocurrency Ticker">
<button class="btn btn-lg btn-primary submitButton">Search</button>
</form>
</span>
<div id="myCoins" class="col-12"></div>
</div>
<div class="col s12 l10 content">
<div class="row">
<div class="col s12 l3 ">
<h2 id="coin-name"></h2>
<span id="coin-display" class="flow-text"></span>
<h3 id="drinkName"></h3>
<span id="drinkImg"></span>
<a class="right hide-on-med-and-up" href="#top">Back to top</a>
</div>
<div class="col s12 l7 main-image hide-on-small-only"></div>
</div>
</div>
</div>
</main>
<footer class="#26a69a teal lighten-1 center">
<div class="container">
<div class="row">
<div class="col l12">
<h5 class="white-text">Developers - Contact Us</h5>
</div>
</div>
</div>
<div class="footer-copyright">
<div class="container">
© 2021 Copyright
</div>
</div>
</div>
</footer>
</div>
<!-- jQuery CDN -->
<script src="https://code.jquery.com/jquery-3.6.0.min.js" integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
<!-- Materialize Framewrk -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
<script src="https://code.jquery.com/ui/1.13.0/jquery-ui.js"></script>
<!-- Custom Scripts -->
<script src="./assets/scripts/main.js"></script>
<script src="./assets/scripts/cocktail.js"></script>
<script src="./assets/scripts/coinbase.js"></script>
</body>
We just had to add the z-index: 1; to the footer.
I'm having an image in the layout, and when I resize the window it's size goes down and become too small.
I want to make the image fix at it's position and prevent it from become smaller and smaller as I shrink the window.
HTML
<div class="container-fluid" style="background-color: #333333;padding-left:30px;">
<div class="row">
<div class="col-md-12 outsidediv">
<!-- image -->
<div class="col-md-2 col-sm-2 col-xs-2 image" >
<img src="https://i.postimg.cc/50JVVSZF/checkk.png" style="max-width:100%;" alt="img">
</div>
<div class='col-md-2 col-sm-2 col-xs-2'>
<h2 style="font-size:2rem;color:#666666;">
<strong>
Some other Text alongside
</strong></h2>
</div>
</div>
</div>
</div>
CSS
.image{
display: flex;
flex-direction: column;
align-items: flex-start;
word-break:none;
color:white;
}
See this fiddle
When you shrink the window size, the image size decreases, how to fix this ?
You can set a static size with CSS: width: 93px; height: 96px;. You can either apply it to the '.image' class div or the image specifically. Here it is with inline CSS on the image tag:
.image{
display: flex;
flex-direction: column;
align-items: flex-start;
word-break:none;
color:white;
}
<html>
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<div class="row">
<div class="col-md-12 outsidediv">
<!-- image -->
<div class="col-md-2 col-sm-2 col-xs-2 image" >
<img src="https://i.postimg.cc/50JVVSZF/checkk.png" style="width: 93px; height: 96px;" alt="img">
</div>
<div class='col-md-2 col-sm-2 col-xs-2'>
<h2 style="font-size:2rem;color:#666666;">
<strong>
Some other Text alongside
</strong></h2>
</div>
</div>
</div>
</body>
</html>
You can just delete max-size and it will stay at the same size all the time.
.bs-example{
margin: 20px;
}
.outsidediv{
/*border:solid;*/
}
ul li{
/*margin-left:15px;*/
box-sizing: border-box;
font-size:1.3rem;
}
#play{
margin-top:35px;
}
.image{
display: flex;
flex-direction: column;
/*justify-content: center;*/
/*font-size:2rem;*/
align-items: flex-start;
word-break:none;
color:white;
}
#bt{
margin-top:40px;
position: relative;
margin-left:30px;
font-size:2rem;
}
nav{
min-width: 100%;
}
body{
margin:0px;
padding:0px;
}
<!DOCTYPE html>
<html lang="en">
<head>
<title>Main page</title>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<!-- font awesome for the icons -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
</head>
<body>
<div class="container-fluid" style="background-color: #333333;padding-left:30px;">
<div class="row">
<div class="col-md-12 outsidediv">
<!-- image -->
<div class="col-md-2 col-sm-2 col-xs-2 image" >
<img src="https://i.postimg.cc/50JVVSZF/checkk.png" alt="img">
</div>
<div class='col-md-2 col-sm-2 col-xs-2'>
<h2 style="font-size:2rem;color:#666666;">
<strong>
Some other Text alongside
</strong></h2>
</div>
</div>
</div>
</div>
</body>
</html>
I want to create a Bootstrap grid whose second row occupies the full height of the page, in a very similar fashion to Twitter bootstrap 3 two columns full height. However, the "non-hacky" answer provided, which uses Bootstrap 4's h-100, doesn't seem to be working. Here's the code and its output:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="wiewport" content="width=device-width, initial-scale=1 user-scalable=no">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<style>
html {
height: 100%;
}
body {
min-height: 100%;
background-color: lightblue;
}
main {
background-color: yellow;
}
#second-row {
background-color: green;
}
textarea {
height: 100%;
width: 100%;
}
</style>
</head>
<body>
<main class="container-fluid h-100">
<div class="row">
<div class="col-sm-6">
Hello,
</div>
<div class="col-sm-6">
World!
</div>
</div>
<div class="row h-100" id="second-row">
<div class="col-sm-8">
<textarea></textarea>
</div>
<div class="col-sm-4">
<textarea></textarea>
</div>
</div>
</main>
</body>
</html>
Update: Bootstrap 4: How to make the row stretch remaining height?, a similar question, has an answer that uses Bootstrap 4's flex-grow class. I tried it like so:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="wiewport" content="width=device-width, initial-scale=1 user-scalable=no">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<style>
html {
height: 100%;
}
body {
min-height: 100%;
background-color: lightblue;
}
main {
background-color: yellow;
}
#second-row {
background-color: green;
}
textarea {
height: 100%;
width: 100%;
}
</style>
</head>
<body>
<main class="container-fluid d-flex h-100 flex-column">
<div class="row">
<div class="col-sm-6">
Hello,
</div>
<div class="col-sm-6">
World!
</div>
</div>
<div class="row flex-fill d-flex justify-content-start" id="second-row">
<div class="col-sm-8 portlet-container portlet-dropzone">
<textarea></textarea>
</div>
<div class="col-sm-4 portlet-container portlet-dropzone">
<textarea></textarea>
</div>
</div>
</main>
</body>
</html>
Output remains unchanged.
You should use flex-grow:1; as explained in the other answer: Bootstrap 4: How to make the row stretch remaining height?
The problem is that body should be height:100%; not min-height...
<main class="container-fluid d-flex h-100 flex-column">
<div class="row">
<div class="col-sm-6">
Hello,
</div>
<div class="col-sm-6">
World!
</div>
</div>
<div class="row flex-grow-1" id="second-row">
<div class="col-sm-8 portlet-container portlet-dropzone">
<textarea></textarea>
</div>
<div class="col-sm-4 portlet-container portlet-dropzone">
<textarea></textarea>
</div>
</div>
</main>
https://www.codeply.com/go/tpecZ31njp
Using Bootstrap 4, I'm trying to center an img at the botton middle of the main div. However, it does not center.
How it should be:
<!doctype html>
<html lang="en">
<head>
<title>Hello, world!</title>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="css/bootstrap.min.css">
<style>
section.masthead2{
background-color:orange;
background-repeat: no-repeat;
background-attachment: scroll;
background-position: center center;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
height:80vh;
}
.gear {
height: 50px;
}
.botonhome{
background-color:#eb6626;
color: #ffffff;
padding-left:2em;
padding-right:2em;
font-family:'Josefin Sans', sans-serif;
font-weight:500;
border-radius:0.5em;
font-size:1.2em;
}
</style>
</head>
<body>
<section class="container-fluid masthead2 d-flex align-items-center justify-content-center">
<div class="row">
<div class="col-12 d-flex justify-content-center">
<h1 class="textoprincipal ">Lorem Ipsum is simply dummy text of the printing</h1>
</div>
<div class="col-12 d-flex justify-content-center">
<a class="btn botonhome mr-3" routerLink="/backoffice/job" routerLinkActive="active" role="button">Testing1</a>
<a class="btn botonhome" routerLink="/backoffice/jobs" routerLinkActive="active" role="button">Testing2</a>
</div>
</div>
<div class="row d-flex align-self-end ">
<div class="col-12">
<img class="gear text-center" src="https://upload.wikimedia.org/wikipedia/commons/1/13/Cog%2C_Web_Fundamentals.svg">
</div>
</div>
</section>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js" integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous"></script>
<script src="js/bootstrap.min.js"></script>
<!-- <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous"></script> -->
</body>
</html>
Since the main container-fluid has d-flex both subsequents div rows are place one beside each other horizontally.
Below is how it would look like without d-flex in the main container-fluid (used a background color for the gear to differentiate)
After d-flex is applied in the main container-fluid (since I need to align and justify the main title and buttons centered) the gear icon image is positioned on the left corner due to d-flex in main container.
How would I made this element d-block override from it's main container-fluid so I can then move it at the bootom middle of the div?
Can this be achieved via Bootstrap classes?
I can not make two main container-fluid, since the background will be an image.
Now I've the posted the answer with img tag also...please check it...
I've posted the answer but you want to change it to class corresponding to your class given in your img tag.
NOTE :
The below code snippet is an example of a Buttontag.In your case change it to img. Now I've included img Tag also in the below example
.gear {
height: 50px;
position:absolute;
margin-left:50%;
margin-right:50%;
transform: translateX(-50%);
}
<img class="gear" src="http://www.clker.com/cliparts/2/5/7/f/1297719143988960365gear_red.png" style="width:50px;height:50px;"/>
You need to wrap image in <div> and give text-align:center to it
.imgcenter{
text-align: center;
}
<section class="container-fluid d-flex align-items-center">
<div class="row d-flex justify-content-center" style="text-align: center;">
<div class="col-12">
<h1 class="d-flex justify-content-center">Lorem Ipsum is simply dummy text of the printing</h1>
</div>
<div class="col-12 d-flex justify-content-center">
<a class="btn mr-3" routerLink="/backoffice/job"
routerLinkActive="active" role="button">Testing1</a>
<a class="btn botonhome" routerLink="/backoffice/jobs"
routerLinkActive="active" role="button">Testing2</a>
</div>
</div>
<div class="imgcenter">
<img class="d-flex align-self-end justify-content-center" src="http://www.clker.com/cliparts/2/5/7/f/1297719143988960365gear_red.png" width= '50'>
</div>
</section>
You can achieve this by bootstrap 3
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
Using class="text-center"
<!doctype html>
<html lang="en">
<head>
<title>Hello, world!</title>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
<style>
section.masthead2{
background-color:orange;
background-repeat: no-repeat;
background-attachment: scroll;
background-position: center center;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
height:100vh;
}
.gear {
height: 50px;
}
.botonhome{
background-color:#eb6626;
color: #ffffff;
padding-left:2em;
padding-right:2em;
font-family:'Josefin Sans', sans-serif;
font-weight:500;
border-radius:0.5em;
font-size:1.2em;
}
</style>
</head>
<body>
<section class="container-fluid masthead2 d-flex align-items-center justify-content-center">
<div class="row">
<div class="col-12 d-flex text-center">
<h1 class="textoprincipal ">Lorem Ipsum is simply dummy text of the printing</h1>
</div>
<div class="col-12 d-flex text-center">
<a class="btn botonhome mr-3" routerLink="/backoffice/job" routerLinkActive="active" role="button">Testing1</a>
<a class="btn botonhome" routerLink="/backoffice/jobs" routerLinkActive="active" role="button">Testing2</a>
</div>
</div>
<div class="row d-flex align-self-end ">
<div class="col-12 text-center">
<img class="gear text-center" src="https://upload.wikimedia.org/wikipedia/commons/1/13/Cog%2C_Web_Fundamentals.svg">
</div>
</div>
</section>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js" integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous"></script>
<script src="js/bootstrap.min.js"></script>
<!-- <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous"></script> -->
</body>
</html>
I am playing around with bootstrap 4 and I am not sure how to get my heights correctly. I have a "side nav", "header", "main" and "footer".
I want "main" to take up most of the height. However for some reason my heights must be messed up as the side nave does not go all the way down and I got this white chunk in the bottom left hand corner.
If you do full screen on my code you will see it.
body,
html,
.container-fluid {
height: 100%;
}
.wrapper {
display: flex;
align-items: stretch;
}
#sidebar {
background-color: blue;
color: white;
}
#media (max-width: 768px) {
#sidebar {
min-width: 80px;
max-width: 80px;
text-align: center;
margin-left: -80px !important;
}
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>test</title>
<!-- Bootstrap CSS CDN -->
<!-- <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"> -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous">
<!-- Our Custom CSS -->
<link rel="stylesheet" href="style4.css">
</head>
<body>
<div class="wrapper h-100">
<!-- Sidebar Holder -->
<nav id="sidebar">
<div class="sidebar-header">
<h3>Bootstrap Sidebar</h3>
</div>
<ul class="list-unstyled components">
<li>
<a>
Home
</a>
</li>
</ul>
</nav>
<div class="container-fluid ">
<div class="row h-100">
<div class="col-12" style="background-color: red;">
One of three columns
</div>
<main class="col-12 h-100" style="background-color: yellow;">
test
</main>
<div class="col-12" style="background-color: pink;">
test2
</div>
</div>
</div>
</div>
</body>
</html>
The problem currently is the that using h-100 on the row, makes the child col-12 also set to h-100 exceed the viewport height which causes scrolling and the whitespace under the sidebar.
As of Bootstrap 4.1, there is a flex-fill util class that is helpful for this layout...
.flex-fill {
flex: 1 1 auto;
}
In this case, you can use it so that the child divs grow to fill remaining height. Just set min-height on the .wrapper:
.wrapper {
min-height: 100vh;
}
And then, make container-fluid also a flexbox container (using d-flex). Use the util flex-fill to make row and the middle col-12 fill height:
<div class="wrapper d-flex">
<!-- Sidebar Holder -->
<nav id="sidebar">
<div class="sidebar-header">
<h3>Bootstrap Sidebar</h3>
</div>
<ul class="list-unstyled components">
<li>
<a>
Home
</a>
</li>
</ul>
</nav>
<div class="container-fluid d-flex flex-column">
<div class="row flex-fill flex-column">
<div class="col-12" style="background-color: red;">
One of three columns
</div>
<main class="col-12 flex-fill" style="background-color: yellow;">
test
</main>
<div class="col-12" style="background-color: pink;">
test2
</div>
</div>
</div>
</div>
https://www.codeply.com/go/VvogWj44cS