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