How to style a checkbox using CSS?

In this tutorial, we will learn how to apply CSS styles on a checkbox or how to customize checkboxes using CSS? By Apurva Mathur Last updated : July 28, 2023

HTML input type="checkbox"

  • <input> elements of type checkbox are rendered by default as boxes that are checked (ticked) when activated as you might see in an official government paper form.
  • Generally this is a square but it may have rounded corners. A checkbox allows you to select single values for submission in a form (or not).
  • Checkboxes are used to let a user select one or more options of a limited number of choices.
  • The <input type="checkbox"> creates a checkbox.

Example

<!DOCTYPE html>
<html>
  <body style="background-color:lightgoldenrodyellow">
    <h1>Favorite color</h1>
    <label>Red
    <input type="checkbox">
    </label>
    <label>Green
    <input type="checkbox">
    </label>
    <label>Blue
    <input type="checkbox">
    </label>
    <label>Black
    <input type="checkbox">
    </label>
  </body>
</html>

The output of the above example is:

Example 1: Style a checkbox using CSS

Customizing Checkboxes with CSS

This checkbox is extremely straightforward; no styling has been applied to this. Now let us try to customize this checkbox by applying some styling to it.

Example to Customize Checkboxes with CSS

<!DOCTYPE html>
<html>
  <style type="text/css">
    .form-control {
    font-family: system-ui, sans-serif;
    font-size: 2rem;
    font-weight: bold;
    line-height: 1.1;
    display: grid;
    grid-template-columns: 1em auto;
    gap: 0.5em;
    }
    input[type="checkbox"] {
    appearance: none;
    background-color: #fff;
    margin: 0;
    font: inherit;
    color: currentColor;
    width: 1.15em;
    height: 1.15em;
    border: 0.15em solid currentColor;
    border-radius: 0.15em;
    transform: translateY(-0.075em);
    }
    .form-control {
    margin-top: 1em;
    }
    input[type="checkbox"] {
    /* ...existing styles */
    display: grid;
    place-content: center;
    }
    input[type="checkbox"]::before {
    content: "";
    width: 0.65em;
    height: 0.65em;
    transform: scale(0);
    transition: 120ms transform ease-in-out;
    }
    input[type="checkbox"]:checked::before {
    transform: scale(1);
    }
    input[type="checkbox"]::before {
    /* ...existing styles */
    /* Windows High Contrast Mode */
    background-color: CanvasText;
    }
  </style>
  
  <body style="background-color:lightgoldenrodyellow">
    <h2>CUSTOMIZED CHECKBOX</h2>
    <label class="form-control">
    <input type="checkbox" name="checkbox" />
    RED
    </label>
    <label class="form-control">
    <input type="checkbox" name="checkbox-checked" checked />
    BLUE
    </label>
  </body>
</html>

The output of the above example is:

Example 2: Style a checkbox using CSS

CSS Examples »



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