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