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