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