On Wed, 2017-02-01 at 14:41 +0000, Gary Stainburn wrote: > To go down the CSS route means that I'll have to amend every CSS / > HTML to fix the problem. The idea is to use one .css file for entire web sites, or large divisions of a single web site. You could see if a Firefox plug-in can help. Could it be something in "<!DOCTYPE HTML PUBLIC" ? My layout.css.devPixelsPerPx is -1.0 on FF45.7.0 (yes I will change to C6 before July) and I do not have a button problem. My customised buttons are described like this ... .aaa {position:absolute; left:930px; top:123px; white-space:nowrap;} .aaa :link, .aaa :visited {background:#ffffff; margin:0; padding:2px 8px 3px 9px; color:#7777d0; text-align:center; font-size:17px; font-weight:bold; text-decoration:none; border-top: 3px solid #eeeeff; border-right: 5px solid #ccccdd; border-bottom: 3px solid #ccccdd; border-left: 6px solid #d0d0e0; } .aaa :hover {background:#ff0000; color:#ffffff; padding:2px 8px 3px 9px; text-decoration:none; border-top: 2px solid #ff6666; border-right: 5px solid #dd0000; border-bottom: 3px solid #ee0000; border-left: 6px solid #dd0000; } -- Regards, Paul. England, EU. England's place is in the European Union. _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos