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