Element button pseudo-class :active generated with transition overflow hidden transform height 300px line-height normal border-radius text-shadow -1px -1px 0px rgba(255,255,255,0.2) outline none box-shadow 0px 0px 6px rgba(0,0,0,0.5) position static opacity 0.83 float none font-weight normal width 300px border 0px rgba(0,0,0,1) solid z-index auto padding 0px display block margin 10px cursor default font-size 75px background box-sizing content-box