Element block pseudo-class :active generated with font-size 16px height 100% border-radius overflow hidden position absolute line-height 1 display block z-index auto padding 20px width 160px font-weight normal transform box-sizing content-box box-shadow 1px 1px 1px rgba(0,0,0,0.3) border 0px rgba(0,0,0,1) solid float left transition cursor default text-shadow 1px 1px 1px rgba(0,0,0,0.2) background margin 0px