.browser-mockup{border-top:2em solid #e6e6e6b3;height:100%;position:relative}.browser-mockup:before{content:"";opacity:.8;background-color:#f44;border-radius:50%;width:.5em;height:.5em;display:block;position:absolute;top:-1.25em;left:1em;box-shadow:0 0 0 2px #f44,1.5em 0 0 2px #9b3,3em 0 0 2px #fb5}