Change Bootstrap 4 checkbox size

There is currently an issue with this and I reported it to Bootstrap. Until that's fixed do the following:

First of all, use the form-control-lg class. Once the issue is fixed using that class will be all you need.

Until the issue is fixed add the following css: 

.custom-control-label::before, 
.custom-control-label::after {
    top: .8rem;
    width: 1.25rem;
    height: 1.25rem;
}

Here's a complete working code example: 

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" integrity="sha384-Zug+QiDoJOrZ5t4lssLdxGhVrurbmBWopoEl+M6BdEfwnCJZtKxi1KgxUyJq13dy" crossorigin="anonymous">

<style>
.custom-control-label::before, 
.custom-control-label::after {
top: .8rem;
width: 1.25rem;
height: 1.25rem;
}
</style>


<div class="custom-control form-control-lg custom-checkbox">
    <input type="checkbox" class="custom-control-input" id="customCheck1">
    <label class="custom-control-label" for="customCheck1">Check this custom checkbox</label>
</div>

For Bootstrap 4.2.1 users this is how I got it to work.

I have introduced a new class custom-control-lg to handle it.

.custom-control-lg .custom-control-label::before,
.custom-control-lg .custom-control-label::after {
    top: 0.1rem !important;
    left: -2rem !important;
    width: 1.25rem !important;
    height: 1.25rem !important;
}

.custom-control-lg .custom-control-label {
    margin-left: 0.5rem !important;
    font-size: 1rem !important;
}
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" rel="stylesheet"/>

<div class="card m-3">
<div class="card-body">
    <div class="custom-control-lg custom-control custom-checkbox">
        <input class="custom-control-input" id="checkbox-large" type="checkbox"/>
        <label class="custom-control-label" for="checkbox-large">
            Checkbox label for large input!
        </label>
    </div>
    <div class="custom-control custom-checkbox">
        <input class="custom-control-input" id="checkbox-small" type="checkbox"/>
        <label class="custom-control-label" for="checkbox-small">
            Checkbox label for small input!
        </label>
    </div>
</div>
</div>

I've approached this a bit differently. Add the following to custom CSS.

.checkbox-1x {
    transform: scale(1.5);
    -webkit-transform: scale(1.5);
}
.checkbox-2x {
    transform: scale(2);
    -webkit-transform: scale(2);
}

Then write the input like this: input type="checkbox" class="checkbox-1x"

Tags:

Bootstrap 4

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