Changing the color of the <abbr> tag header within Bootstrap 4

How can I style an abbr tag's title in Bootstrap 4? I am struggling to override the styles set in bootstrap.css.

This is what I have tried so far, but the tooltip remains unchanged:

abbr[title]::after {
  /* content: " (" attr(title) ")"; */
  background-color: indigo;
  color: white;
}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js"></script>

<p>
  Pre-mRNA comprises the bulk of <abbr title="heterogeneous nuclear RNA" class="text-info font-italic">hnRNA</abbr>.
</p>

Is there a solution to this issue? Thank you.

htmlcssbootstrap-4abbr

Answer №1

abbr:hover::after {
  content: attr(title);
  background-color: indigo;
  color: white;
}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js"></script>

<p>
  The majority of pre-mRNA is composed of <abbr title="heterogeneous nuclear RNA" class="text-info font-italic">hnRNA</abbr>.
</p>

Answer №2

This response from smugglerFlynn provides insights on how to override styles and understand the importance of CSS priority values.

For more information, visit this link.

To target your body tag, assign it an id like <body id="bs-override">

If you are struggling with overriding specific elements, use the query #bs-override selector

Ensure that your custom.css file is loaded after all other .css files for proper styling.

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