Set a button group's width to 100% and make buttons equal width? - css

Question

I'm using Bootstrap, and I'd like to set an entire btn-group to have a width of 100% of its parent element. I'd also like the inner buttons to take equal widths. As it is, I can't achieve either.
I've made a JSFiddle here: http://jsfiddle.net/BcQZR/12/
Here is the HTML:
<div class="span8 background">
<div class="btn-group btn-block" id="colours">
<span class="btn"><input type='checkbox' name='size' value='red'/>red</span>
<span class="btn"><input type='checkbox' name='size' value='orange'/>orange</span>
<span class="btn"><input type='checkbox' name='size' value='yellow'/>yellow</span>
</div> <!-- /btn-group -->
</div>
And here is my current CSS, which doesn't work:
#colours {
width: 100%;
}

Answer 1

Bootstrap has the .btn-group-justified css class.
How it's structured is based on the type of tags you use.
With <a> tags
<div class="btn-group btn-group-justified" role="group" aria-label="...">
...
</div>
With <button> tags
<div class="btn-group btn-group-justified" role="group" aria-label="...">
<div class="btn-group" role="group">
<button type="button" class="btn btn-default">Left</button>
</div>
<div class="btn-group" role="group">
<button type="button" class="btn btn-default">Middle</button>
</div>
<div class="btn-group" role="group">
<button type="button" class="btn btn-default">Right</button>
</div>
</div>

Answer 2

There's no need for extra css the .btn-group-justified class does this.
You have to add this to the parent element and then wrap each btn element in a div with .btn-group like this
<div class="form-group">
<div class="btn-group btn-group-justified">
<div class="btn-group">
<button type="submit" id="like" class="btn btn-lg btn-success ">Like</button>
</div>
<div class="btn-group">
<button type="submit" id="nope" class="btn btn-lg btn-danger ">Nope</button>
</div>
</div>
</div>

Answer 3

BOOTSTRAP 2 (source)
The problem is that there is no width set on the buttons. Try this:
.btn {width:20%;}
EDIT:
By default the buttons take an auto width of its text length plus some padding, so I guess for your example it is probably more like 14.5% for 5 buttons (to compensate for the padding).
Note:
If you don't want to try and compensate for padding you can use box-sizing:border-box;
http://www.w3schools.com/cssref/css3_pr_box-sizing.asp

Answer 4

I don't like the solution of settings widths on .btn because it assumes there'll always be the same number of items in the .btn-group. This is a faulty assumption and leads to bloated, presentation-specific CSS.
A better solution is to change how .btn-group with .btn-block and child .btn(s) are display. I believe this is what you're looking for:
.btn-group.btn-block {
display: table;
}
.btn-group.btn-block > .btn {
display: table-cell;
}
Here's a fiddle: http://jsfiddle.net/DEwX8/123/
If you'd prefer to have equal-width buttons (within reason) and can support only browsers that support flexbox, try this instead:
.btn-group.btn-block {
display: flex;
}
.btn-group.btn-block > .btn {
flex: 1;
}
Here's a fiddle: http://jsfiddle.net/DEwX8/124/

Answer 5

For bootstrap 4 just add this class:
w-100

Answer 6

Bootstrap 4 removed .btn-group-justified. As a replacement you can use <div class="btn-group d-flex" role="group"></div> as a wrapper around elements with .w-100.
Try this:
<div class="btn-group d-flex" role="group>
<button type="button" class="btn btn-primary w-100">Submit</button>
<button type="button" class="btn btn-primary w-100">Cancel</button>
</div>

Answer 7

Angular - equal width button group
Assuming you have an array of 'things' in your scope...
Make sure the parent div has a width of 100%.
Use ng-repeat to create the buttons within the button group.
Use ng-style to calculate the width for each button.
<div class="btn-group"
style="width: 100%;">
<button ng-repeat="thing in things"
class="btn btn-default"
ng-style="{width: (100/things.length)+'%'}">
{{thing}}
</button>
</div>

Answer 8

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/>
<div class="btn-group btn-block">
<button type="button" data-toggle="dropdown" class="btn btn-default btn-xs btn-block dropdown-toggle">Actions <span class="caret"></span>
<span class="sr-only">Toggle Dropdown</span></button><ul role="menu" class="dropdown-menu"><li>Action one</li><li class="divider"></li><li><a href="#" >Action Two</a></li></ul></div>

Answer 9

Bootstrap 4
<ul class="nav nav-pills nav-fill">
<li class="nav-item">
<a class="nav-link active" href="#">Active</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Longer nav link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>

Answer 10

Bootstrap 4 Solution
<div class="btn-group w-100">
<button type="button" class="btn">One</button>
<button type="button" class="btn">Two</button>
<button type="button" class="btn">Three</button>
</div>
You basically tell the btn-group container to have width 100% by adding w-100 class to it. The buttons inside will fill in the whole space automatically.