NickMo1 However, when I paste this code into custom.css it does not work
Having checked in both firefox and safari, The CSS declarations are working fine. Kindly view screenshots for the same where the declaration is coming from custom.css file.
https://cl.ly/0z0c3f1z3c00
https://cl.ly/29070p3f3208
It should work fine for chrome too since it being modern browser 🙂
Also, You may wish to add these declarations for older browsers and change opacity value simultaneously :
/* This works in IE 8 & 9 too */
/* ... but also 5, 6, 7 */
filter: alpha(opacity=50);
/* Older than Firefox 0.9 */
-moz-opacity:0.5;
/* Safari 1.x (pre WebKit!) */
-khtml-opacity: 0.5;