Element button pseudo-class :active generated with box-sizing content-box font-size 16px status border-radius display block transform background position absolute height 0px border 1px rgba(255, 255, 255, 0.909804) solid opacity 1 overflow visible z-index auto outline none text-shadow box-shadow font-weight normal float none padding 0px width 25px cursor default margin 0px line-height normal transition