Changing the highlight color in HTML
One of those cool CSS3 declarations that you can use today is ::selection, which overrides your browser-level or system-level text highlight color with a color of your choosing. At the time of this writing, only Safari and Firefox are supporting this, and both in slightly different ways. Fortunately, this can be thought of as one of those “forward-enhancement” techniques. It’s a nice touch for those using modern browsers, but it just gets ignored in other browsers and it’s not a big deal.
::selection { background: #f978a4; /* Safari */ }
::-moz-selection { background: #f978a4; /* Firefox */ }
