Element block pseudo-class :active generated with background z-index auto border-radius box-sizing content-box float none cursor default border 0px rgba(0,0,0,1) solid position static overflow hidden outline none margin 0px width 160px display block opacity 1 font-weight normal line-height 1 transition height auto transform font-size 16px box-shadow 1px 1px 1px rgba(0,0,0,0.3) text-shadow 1px 1px 1px rgba(0,0,0,0.2) padding 20px