Style Bootstrap 4 Custom Checkbox

Question

How do I style a custom checkbox in Bootstrap 4? I've tried everything but I can't even change its background color.

This is my code outline:

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
<label class="custom-control custom-checkbox">
      <input type="checkbox" class="custom-control-input">
      <span class="custom-control-indicator"></span>
      <span class="custom-control-description">Check this custom checkbox</span>
</label>

What do I target here? Could someone just show me how to change its background?

Thank you.

Answer 1

I made a little demo for you

<style>
        .custom-checkbox {
            padding: 0;
        }

            .custom-checkbox .fa-toggle-on,
            .custom-checkbox .fa-toggle-off {
                font-size: 135%;
                /*this icon is relatively small*/
            }

            .custom-checkbox input[type=checkbox] {
                visibility: collapse;
                width: 0px;
                margin-left: -0.25em;
            }

                .custom-checkbox input[type=checkbox] ~ .custom-check-on {
                    display: none;
                }

                .custom-checkbox input[type=checkbox]:checked ~ .custom-check-on {
                    display: inline;
                }

                .custom-checkbox input[type=checkbox]:checked ~ .custom-check-off {
                    display: none;
                }

                .custom-checkbox input[type=checkbox]:disabled ~ * {
                    color: #b6b4b4;
                }

                .custom-checkbox input[type=checkbox].error ~ .custom-check-on,
                .custom-checkbox input[type=checkbox].error ~ .custom-check-off {
                    border: solid 2px red;
                }

            .custom-checkbox i.btn {
                overflow: hidden;
                color: transparent;
                position: relative;
                display: inline-block;
                width: 3em;
                padding: 0;
                font-style: normal;
            }

            .custom-checkbox .btn:after {
                content: "";
                font-style: normal;
                border: 7px solid white;
                position: absolute;
                top: 0;
                bottom: 0;
                border-radius: 5px;
            }

            .custom-checkbox .custom-check-on.btn:after {
                right: -4px;
            }

            .custom-checkbox .custom-check-off.btn:after {
                left: -4px;
            }

            .custom-checkbox .custom-check-on.btn:before {
                content: "On";
                color: white;
                margin-left: -10px;
            }

            .custom-checkbox .custom-check-off.btn:before {
                content: "Off";
                color: #333;
                margin-right: -15px;
            }

            .custom-checkbox input[type=checkbox]:checked ~ .btn.custom-check-on {
                display: inline-block;
            }
    </style>

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet"/>
<link href="https://pro.fontawesome.com/releases/v5.10.0/css/all.css" rel="stylesheet"/>
<div class="container">
        <h3>Create custom checkbox with Bootstrap and Font Awesome</h3>
        <p>Here are some samples of customcheckboxes. You litterly can use any shape or color to make them the way you like it</p>
        <label class="custom-checkbox">
            <input name="check" type="checkbox" autocomplete="off" >
            <i class="custom-check-on btn btn-primary btn-sm">
            </i><i class="custom-check-off btn btn-light active btn-sm">
            </i><input name="check" type="hidden" value="false">
            <span class="ml-1">
                Check Box
            </span>
        </label>
        <br>
        <label class="custom-checkbox">
            <input name="check" type="checkbox" autocomplete="off" >
            <i class="custom-check-on fa fa fa-circle">
            </i><i class="custom-check-off fal fa-circle">
            </i><input name="check" type="hidden" value="false">
            <span class="ml-1">
                Check Box
            </span>
        </label>
        <br>
        <label class="custom-checkbox">
            <input name="check" type="checkbox" autocomplete="off" >
            <i class="custom-check-on far fa-check-square" style="color:black" >
            </i><i class="custom-check-off far fa-square" style="color:lightgray">
            </i><input name="check" type="hidden" value="false">
            <span class="ml-1">
                Check Box
            </span>
        </label>
        <br>
        <label class="custom-checkbox">
            <input name="check" type="checkbox" autocomplete="off" >
            <i class="custom-check-on text-info  fa fa-toggle-on">
            </i><i class="custom-check-off text-secondary fa fa-toggle-off">
            </i><input name="check" type="hidden" value="false">
            <span class="ml-1">
                Check Box
            </span>
        </label>
        <br>
        <label class="custom-checkbox">
            <input name="check" type="checkbox" autocomplete="off" >
            <i class="custom-check-on text-success far fa-smile">
            </i><i class="custom-check-off text-danger fas fa-angry">
            </i><input name="check" type="hidden" value="false">
            <span class="ml-1">
                Check Box
            </span>
        </label>
        <br>
        <label class="custom-checkbox">
            <input name="check" type="checkbox" autocomplete="off" >
            <i class="custom-check-on fas fa-arrow-alt-circle-up">
            </i><i class="custom-check-off far fa-arrow-alt-circle-down">
            </i><input name="check" type="hidden" value="false">
            <span class="ml-1">
                Check Box
            </span>
        </label>
        <br>


    </div>

<div class="container">
    <h3>Create custom checkbox with Bootstrap and Font Awesome</h3>
    <p>Here are some samples of customcheckboxes. You litterly can use any shape or color to make them the way you like it</p>
    <label class="custom-checkbox">
        <input name="check" type="checkbox" autocomplete="off" >
        <i class="custom-check-on btn btn-primary btn-sm">
        </i><i class="custom-check-off btn btn-light active btn-sm">
        </i><input name="check" type="hidden" value="false">
        <span class="ml-1">
            Check Box
        </span>
    </label>
    <br>
    <label class="custom-checkbox">
        <input name="check" type="checkbox" autocomplete="off" >
        <i class="custom-check-on fa fa fa-circle">
        </i><i class="custom-check-off fal fa-circle">
        </i><input name="check" type="hidden" value="false">
        <span class="ml-1">
            Check Box
        </span>
    </label>
    <br>
    <label class="custom-checkbox">
        <input name="check" type="checkbox" autocomplete="off" >
        <i class="custom-check-on far fa-check-square" style="color:black" >
        </i><i class="custom-check-off far fa-square" style="color:lightgray">
        </i><input name="check" type="hidden" value="false">
        <span class="ml-1">
            Check Box
        </span>
    </label>
    <br>
    <label class="custom-checkbox">
        <input name="check" type="checkbox" autocomplete="off" >
        <i class="custom-check-on text-info  fa fa-toggle-on">
        </i><i class="custom-check-off text-secondary fa fa-toggle-off">
        </i><input name="check" type="hidden" value="false">
        <span class="ml-1">
            Check Box
        </span>
    </label>
    <br>
    <label class="custom-checkbox">
        <input name="check" type="checkbox" autocomplete="off" >
        <i class="custom-check-on text-success far fa-smile">
        </i><i class="custom-check-off text-danger fas fa-angry">
        </i><input name="check" type="hidden" value="false">
        <span class="ml-1">
            Check Box
        </span>
    </label>
    <br>
    <label class="custom-checkbox">
        <input name="check" type="checkbox" autocomplete="off" >
        <i class="custom-check-on fas fa-arrow-alt-circle-up">
        </i><i class="custom-check-off far fa-arrow-alt-circle-down">
        </i><input name="check" type="hidden" value="false">
        <span class="ml-1">
            Check Box
        </span>
    </label>
    <br>


</div>

https://jsfiddle.net/eghbaly/t4zvshdu/4/ https://github.com/eghbaly/BS-CustomCheckbox

Answer 2

It worked for me with

.custom-checkbox .custom-control-input:checked~.custom-control-label::before {
    background-color: #caca4c;
}
.custom-control-input:checked~.custom-control-label::before {
    color: #fff;
    background-color: #caca4c;
}