Why Can\'t I Change the Background Color of My Checkbox in Firefox 29?

Troubleshooting Checkbox Color Modification

You have encountered difficulty in changing the background color of a checkbox, despite trying various CSS styles. This behavior is particularly puzzling as you are using Firefox 29, which is up to date. To address this, let's investigate the underlying CSS and browser behavior.

CSS Stylesheet

The CSS you have provided includes two rules that attempt to style the checkbox:

<code class="css">input[type="checkbox"] {
    background: #990000;
}

.chk {
   background-color: #990000;
}</code>

The first rule targets all checkboxes using the attribute selector, while the second rule targets elements with the class "chk." In both cases, the background color is set to #990000.

Browser Behavior

Firefox, along with other browsers, has implemented certain default styles for form elements like checkboxes. These default styles may override your CSS rules, making it difficult to change the appearance of the checkbox.

Solution

To resolve this issue, you can utilize the accent-color property, which allows you to specify a color for various form elements, including checkboxes. Here's an updated CSS example:

<code class="css">#cb1 {
  accent-color: #9b59b6;
}

#cb2 {
  accent-color: #34495e;
}

#cb3 {
  accent-color: #e74c3c;
}</code>

In this example, the checkbox elements are assigned different accent colors using the #cb ID attribute. This should override the default browser styles and allow you to change the checkbox color as desired.

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