CSS problem with discourse search window after latest update

The rule starting at line #96 in your desktop CSS is too broad.

div.container {
  width: 1110px; 
}

You’re forcing all divs with the container class to be 1110px wide. The inputs you’re having problems with inherit that width.

The real fix is that your selectors should be more specific to the elements you want to target.

However you can try something like this if you’re looking for a quick fix:

div.container {
  width: 1110px;
  max-width: 100%;
}