Example page for regex-like CSS selector

Elements with the href attribute are overlined. SVG files get prefixed with an image. TU Graz websites get a warning as prefix text. HTTPS websites get sandboxed (pun intended, I mean the dashed box).

a[href] { text-decoration: overline; }
a[href$="svg"] { background: url("http://lukas-prokop.at/theme/img/fileext/svg.png") left center no-repeat; padding-left: 20px; }
a[href*="tugraz"]:before { color: #A00; content: "Potential TU Graz content! "; }
a[href^="https"] { outline: black dashed 1px; padding: 2px; }