Tips for choosing specific CSS selectors from a variety of different stylesheets

Currently, I am using two different stylesheets - Bootstrap 4.0 and Materialize 4.0.

My challenge is selecting specific selectors from both stylesheets but overriding conflicting styles.

For instance, I would like to apply the header navigation style from Bootstrap but it ends up conflicting with the navbar style in Materialize, resulting in a messy output. How can I disable a selector from one stylesheet to avoid this issue?

Thank you.

Answer №1

The difference between Bootstrap and Materialize classes and markup is quite noticeable. Let me explain: In Materialize, the markup for the navbar looks like this:

<nav>
  <div class="nav-wrapper">
    .....
  <div/>
</nav>

On the other hand, in Bootstrap it appears as:

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  ...
</nav>

Therefore, when selecting a specific element, it's relatively straightforward. You can simply use the class name or tag name to access the elements.

Answer №2

Initially, one of the two stylesheets will inevitably override the other. The stylesheet that is loaded last takes precedence over all previously loaded stylesheets. For example:

Bootstrap: header { color: white; }

Materialize: header { color: black; }

If Materialize CSS is loaded last, it will override the CSS of Bootstrap.

In your scenario, you need to encompass all attributes from both stylesheets in order to achieve your desired outcome. For example:

Bootstrap:

header { color: white; background: white; }

Materialize:

header { color: black; font-size: 14px; }

Subsequently, you will need to adjust all three utilized attributes to achieve your goal:

Custom CSS:

header { color: blue; background: yellow; font-size: 20px; }

Answer №3

When including both CSS files, there is a risk of overlapping styles. The last stylesheet called will take precedence over the previous CSS styles.

To avoid this issue, follow these steps:

  1. Unminify both CSS files.
  2. Add a unique CSS class to the body for added assurance.
  3. Extract the necessary CSS from both files and combine them into a new CSS file. Be sure to include the body class if one was added.
  4. Avoid calling the original bootstrap 4.0 and materialize 4.0 CSS files. Only link the newly created CSS stylesheet. Be cautious of the order of CSS classes as they may still override each other.

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