Reply To: [Solved] Extending div background-color to fill gutter

[captainill]

Without getting into the html structure I’ll add that the initial solution did not work in firefox. The browser width expanded in consequence to the width of the absolutely positioned content in the :before pseudo selector.

I went with boxshadow which is ‘update #2’ in the posting I linked to.

my css:

::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: -9999px;
    right: 0;
    box-shadow: 9999px 0 0 white;
}