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