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>
Related
How would I align items in a sidebar like this:
See image
my main problems are the formatting for the footer being fixed to the bottom and the main sidebar container overflowing and scrolling but still being between the sidebar header and the sidebar bottom element text container, so not overlapping either while having that element be scrollable without the whole sidebar scrolling
what i have so far:
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.3.0-alpha1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-GLhlTQ8iRABdZLl6O3oVMWSktQOp6b7In1Zl3/Jr59b6EGGoI1aFkw7cmDA6j6gD" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.3.0-alpha1/dist/js/bootstrap.bundle.min.js" integrity="sha384-w76AqPfDkMBDXo30jS1Sgez6pr3x5MlQ1ZAGC+nuZB+EYdgRZgiwxhTBTkF7CXvN" crossorigin="anonymous"></script>
<div class="container-fluid">
<div class="row">
<div class="col-4 bg-dark text-white" style="height: 100vh; width:250px;">
<!-- <div class="col bg-primary">
test
</div>
<div class="col bg-danger">
test 2
</div>
<div class="col bg-primary" style="position: fixed; bottom: 0;">
test 3
</div> -->
<div class="d-flex flex-column justify-content-start mb-3">
<div class="p-2 bg-primary">
Flex item 1
</div>
<div class="p-2 bg-danger flex-grow-1">
Flex item 2
</div>
<div class="p-2 bg-primary" style="position:fixed; bottom:0;">
Flex item 3
</div>
</div>
</div>
<div class="col bg-secondary text-white">
main body
</div>
</div>
<!-- <div class="row">
<div class="col bg-secondary text-white">
main body
</div>
</div> -->
</div>
using bootstrap 5.3.0 alpha1
Here's a minimal example of how to create a full page layout with a container that should scroll on overflow using Bootstrap V5.3.
Read the docs if you like to learn how it works.
Read about flex-grow-1 or if you're new to flex start here.
Learn how overflow works.
nav {
height: 100vh;
max-height: 100vh;
background: lightgreen;
}
main {
background: lightyellow;
}
<html>
<head>
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.3.0-alpha1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-GLhlTQ8iRABdZLl6O3oVMWSktQOp6b7In1Zl3/Jr59b6EGGoI1aFkw7cmDA6j6gD" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.3.0-alpha1/dist/js/bootstrap.bundle.min.js" integrity="sha384-w76AqPfDkMBDXo30jS1Sgez6pr3x5MlQ1ZAGC+nuZB+EYdgRZgiwxhTBTkF7CXvN" crossorigin="anonymous"></script>
</head>
<body>
<div class="container-fluid px-0">
<div class="row gx-0">
<nav class="col-4 p-2 d-flex flex-column gap-1">
<div class="">
<h5>
Sidebar header
</h5>
</div>
<div class="">
Some content
</div>
<div class="">
Some other content
</div>
<div class="flex-grow-1 overflow-auto">
sidebar scroll
<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> end sidebar scroll
</div>
<div class="">
Sidebar footer
</div>
</nav>
<main class="col">
main body
</main>
</div>
</div>
</body>
</html>
If <main> should also overflow:scroll at 100vh.
Add in CSS:
main {
height: 100vh;
max-height: 100vh;
}
and in HTML:
<main class="col overflow-auto">
If <main> can grow beyond the viewport height and you want <nav> to grow along with it.
You could wrap the content inside col-4 in an absolute positioned container that fills col-4 and therefore let it grow beyond 100vh height while keeping the overflow scroll if <main> is smaller, for example:
nav {
min-height: 100vh;
background: lightgreen;
}
nav #overflow-container {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
main {
background: lightyellow;
}
<html>
<head>
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.3.0-alpha1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-GLhlTQ8iRABdZLl6O3oVMWSktQOp6b7In1Zl3/Jr59b6EGGoI1aFkw7cmDA6j6gD" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.3.0-alpha1/dist/js/bootstrap.bundle.min.js" integrity="sha384-w76AqPfDkMBDXo30jS1Sgez6pr3x5MlQ1ZAGC+nuZB+EYdgRZgiwxhTBTkF7CXvN" crossorigin="anonymous"></script>
</head>
<body>
<div class="container-fluid px-0">
<div class="row gx-0">
<nav class="col-4 position-relative">
<div class="p-2 d-flex flex-column gap-1" id="overflow-container">
<div class="">
<h5>
Sidebar header
</h5>
</div>
<div class="">
Some content
</div>
<div class="">
Some other content
</div>
<div class="flex-grow-1 overflow-auto">
sidebar scroll
<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> end sidebar scroll
</div>
<div class="">
Sidebar footer
</div>
</div>
</nav>
<main class="col">
main body
</main>
</div>
</div>
</body>
</html>
If <nav> and <main> should stack vertically at a smaller screen size.
In the HTML make .row a flex-column by default and a flex row on the medium breakpoint with flex-md-row. Then change col-4 to col-md-4.
In the CSS add a media query, using Bootstrap's medium breakpoint width.
Note: Snippet below is based on the example above with an absolute positioned container, but the same logic can also be applied to the other examples.
nav {
min-height: 100vh;
background: lightgreen;
}
main {
background: lightyellow;
}
#media (min-width: 768px) {
nav #overflow-container {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
}
<html>
<head>
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.3.0-alpha1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-GLhlTQ8iRABdZLl6O3oVMWSktQOp6b7In1Zl3/Jr59b6EGGoI1aFkw7cmDA6j6gD" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.3.0-alpha1/dist/js/bootstrap.bundle.min.js" integrity="sha384-w76AqPfDkMBDXo30jS1Sgez6pr3x5MlQ1ZAGC+nuZB+EYdgRZgiwxhTBTkF7CXvN" crossorigin="anonymous"></script>
</head>
<body>
<div class="container-fluid px-0">
<div class="row gx-0 flex-column flex-md-row">
<nav class="col-md-4 position-relative">
<div class="p-2 d-flex flex-column gap-1" id="overflow-container">
<div class="">
<h5>
Sidebar header
</h5>
</div>
<div class="">
Some content
</div>
<div class="">
Some other content
</div>
<div class="flex-grow-1 overflow-auto">
sidebar scroll
<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> end sidebar scroll
</div>
<div class="">
Sidebar footer
</div>
</div>
</nav>
<main class="col">
main body
</main>
</div>
</div>
</body>
</html>
I'm trying to create a layout like following using bootstrap 4.
Following is my JSFiddle and I think the approach I have taken is incorrect and there's a better way of doing this. And also there are responsive issues.
JSFiddle
html,
body {
height: 100%;
}
.yellow {
background-color: yellow;
}
.red {
background-color: red;
}
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="container-fluid h-100 ">
<div class="row justify-content-center h-100">
<div class="col-4 hidden-md-down yellow" id="yellow">
Form Goes Here
</div>
<div class="col-10 col-sm-10 col-md-8 col-lg-8 col-xl-8 red">
Background image
</div>
</div>
</div>
bootstrap grid has 12 column and your total was coming to 14. I have added
col-sm-4 to yellow div and col-sm-8 to red div.
refer below link for more details. thanks
https://getbootstrap.com/docs/4.1/layout/grid/
html,
body {
height: 100%;
}
.yellow {
background-color: yellow;
}
.red {
background-color: red;
}
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="container-fluid h-100 ">
<div class="row justify-content-center h-100">
<div class="col-sm-4 hidden-md-down yellow" id="yellow">
Form Goes Here
</div>
<div class="col-sm-8 col-md-8 col-lg-8 col-xl-8 red">
Background image
</div>
</div>
</div>
Bootstrap columns must add up to 12, yet yours add up to 14 for some viewports.What you probably want is to have one column at 4 and one at 8:
.left, .right {
height: 100vh;
}
.left {
background: yellow;
}
.right {
background: red;
}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<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/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<div class="row">
<div class="col-4 left"></div>
<div class="col-8 right"></div>
</div>
The better option is to just use .col for the red region so that it occupies the remaining width.
html,
body {
height: 100%;
}
.yellow {
background-color: yellow;
}
.red {
background-color: red;
}
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" rel="stylesheet" />
<div class="container-fluid h-100">
<div class="row h-100">
<div class="col-4 hidden-md-down yellow" id="yellow">
Form Goes Here
</div>
<div class="col red">
Background image
</div>
</div>
</div>
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>
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
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