Does bootstrap 4 have a built in horizontal divider? - html

Question

Does bootstrap 4 have a built in horizontal divider? I can do this,
<style type="text/css">
.h-divider{
margin-top:5px;
margin-bottom:5px;
height:1px;
width:100%;
border-top:1px solid gray;
}
</style>
But I want to use the built in bootstrap css, I can't find it anywhere in the docs, maybe I'm missing it.

Answer 1

HTML already has a built-in horizontal divider called <hr/> (short for "horizontal rule"). Bootstrap styles it like this:
hr {
margin-top: 1rem;
margin-bottom: 1rem;
border: 0;
border-top: 1px solid rgba(0, 0, 0, 0.1);
}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" />
<p>
Some text
<hr/>
More text
</p>

Answer 2

Bootstrap 4 define a CSS style for the HTML built-in horizontal divider <hr />, so just use it.
You can also customize margin with spacing utilities: mt for margin top, mb for margin bottom and my for margin top and bottom. The integer represent spacing 1 for small margin and 5 for huge margin. Here is an example:
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<hr class="mt-2 mb-3"/>
<!-- OR -->
<hr class="my-12"/>
<!-- It's like -->
<hr class="mt-3 mb-3"/>
I used to be using just a div with border-top like:
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<div class="border-top my-3"></div>
but it's a silly method to make the work done, and you can have some issues. So just use <hr />.

Answer 3

For Bootstrap 4
<hr> still works for a normal divider. However, if you want a divider with text in the middle:
<div class="row">
<div class="col"><hr></div>
<div class="col-auto">OR</div>
<div class="col"><hr></div>
</div>

Answer 4

For dropdowns, yes:
https://v4-alpha.getbootstrap.com/components/dropdowns/
<div class="dropdown-menu">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Separated link</a>
</div>

Answer 5

For Bootstrap v4;
for a thin line;
<div class="divider"></div>
for a medium thick line;
<div class="divider py-1 bg-dark"></div>
for a thick line;
<div class="divider py-1 bg-dark"><hr></div>

Answer 6

You can use the mt and mb spacing utilities to add extra margins to the <hr>, for example:
<hr class="mt-5 mb-5">
https://getbootstrap.com/docs/4.3/utilities/spacing/

Answer 7

Here are some custom utility classes:
hr.dashed {
border-top: 2px dashed #999;
}
hr.dotted {
border-top: 2px dotted #999;
}
hr.solid {
border-top: 2px solid #999;
}
hr.hr-text {
position: relative;
border: none;
height: 1px;
background: #999;
}
hr.hr-text::before {
content: attr(data-content);
display: inline-block;
background: #fff;
font-weight: bold;
font-size: 0.85rem;
color: #999;
border-radius: 30rem;
padding: 0.2rem 2rem;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
/*
*
* ==========================================
* FOR DEMO PURPOSES
* ==========================================
*
*/
body {
min-height: 100vh;
background-color: #fff;
color: #333;
}
.text-uppercase {
letter-spacing: .1em;
}
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.2/css/bootstrap.min.css">
<div class="container py-5">
<!-- For Demo Purpose -->
<header class="py-5 text-center">
<h1 class="display-4">Bootstrap Divider</h1>
<p class="lead mb-0">Some divider variants using <hr> element. </p>
</header>
<div class="row">
<div class="col-lg-8 mx-auto">
<div class="mb-4">
<h6 class=" text-uppercase">Dashed</h6>
<!-- Dashed divider -->
<hr class="dashed">
</div>
<div class="mb-4">
<h6 class=" text-uppercase">Dotted</h6>
<!-- Dotted divider -->
<hr class="dotted">
</div>
<div class="mb-4">
<h6 class="text-uppercase">Solid</h6>
<!-- Solid divider -->
<hr class="solid">
</div>
<div class="mb-4">
<h6 class=" text-uppercase">Text content</h6>
<!-- Gradient divider -->
<hr data-content="AND" class="hr-text">
</div>
</div>
</div>
</div>

Answer 8

<div class="dropdown">
<button data-toggle="dropdown">
Sample Button
</button>
<ul class="dropdown-menu">
<li>A</li>
<li>B</li>
<li class="dropdown-divider"></li>
<li>C</li>
</ul>
</div>
This is the sample code for the horizontal divider in bootstrap 4. Output looks like this:
class="dropdown-divider" used in bootstrap 4, while class="divider" used in bootstrap 3 for horizontal divider

Answer 9

<div class="form-group col-12">
<hr>
</div>

Answer 10

I am using this example in my project:
html:
<hr class="my-3 dividerClass"/>
css:
.dividerClass{
border-top-color: #999
}

Answer 11

in Bootstrap 5 you can do something like this:
<div class="py-2 my-1 text-center position-relative mx-2">
<div class="position-absolute w-100 top-50 start-50 translate-middle" style="z-index: 2">
<span class="d-inline-block bg-white px-2 text-muted">or</span>
</div>
<div class="position-absolute w-100 top-50 start-0 border-muted border-top"></div>
</div>

Answer 12

This is the way I did it in Express.js + Pug:
CSS:
.divider-text {
position: relative;
text-align: center;
margin-top: 15px;
margin-bottom: 15px;
}
.divider-text span {
padding: 7px;
font-size: 12px;
position: relative;
z-index: 2;
}
.divider-text:after {
content: "";
position: absolute;
width: 100%;
border-bottom: 1px solid #ddd;
top: 55%;
left: 0;
z-index: 1;
}
PUG code:
p.divider-text
span.bg-light OR
Which then compiles into this:
HTML:
<p class="divider-text"><span class="bg-light">OR</span></p>
Visual Result: