Can CSS Calculations Determine the Maximum Width of an Element?

Can CSS Calculations Determine Maximum Width?

It may be desirable to set an element's maximum width based on a calculation, such as choosing the lesser of two values. However, CSS syntax normally only allows a single value for max-width.

Potential Solutions

One possible approach is to use nested calculations, such as:

<code class="css">max-width: calc(max(500px, 100% - 80px))</code>

However, this is not supported by all browsers.

Another potential solution is to use media queries:

<code class="css">.yourselector {
  max-width: calc(100% - 80px);
}

@media screen and (max-width: 500px) {
  .yourselector {
    max-width: 500px;
  }
}</code>

This method creates two rules: one for screens wider than 500px and one for screens narrower than 500px. The second rule effectively overrides the first, ensuring that the element's maximum width is limited to 500px when the screen width is below that threshold.

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