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