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