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