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