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