Example code with mistake: Omitted parentheses for minimum width expression.

[xdoctordog]

Responsive web design -> CSS in responsive design -> Media queries

https://developer.adobe.com/commerce/frontend-core/guide/responsive-design/css/#media-queries

Third block with code example has a mistake - Omitted parentheses for minimum width expression.

@media only screen and (min-width: @screen__m + 1) and (max-width: (@screen__xl - 1)) {