Why Isn't `overflow-x: hidden` Working on My Mobile Menu Bar?

Overflow-x:hidden Not Working in Mobile Browsers

In this issue, a website's black menu bar expands beyond the window edge in mobile browsers, despite applying overflow-x:hidden to the body. This excessive whitespace is unexplained and seemingly external to the HTML structure.

Solution:

To resolve this issue, the author suggests encapsulating the website content within a wrapper div and applying overflow-x:hidden to the wrapper instead of the body or html.

Apparently, browsers prioritize the viewport meta tag and ignore overflow attributes on html and body elements. By placing the overflow attribute within the wrapper div, the constraint is applied effectively, restricting content expansion. Additionally, adding position: relative to the wrapper div may also be necessary.

Example:

  <div><pre class="brush:php;toolbar:false">#wrapper {
  overflow-x: hidden;
  position: relative;
}