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