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