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