Element block pseudo-class :active generated with transform overflow hidden margin 0px line-height 1 transition padding 20px z-index auto display block width 160px border-radius box-sizing content-box height auto position static cursor default font-weight normal background font-size 16px 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)