Element block pseudo-class :active generated with z-index auto padding 20px transition display block font-weight normal border 0px rgba(0,0,0,1) solid margin 0px box-shadow 1px 1px 1px rgba(0,0,0,0.3) width 500px background height auto font-size 16px overflow hidden position static transform cursor default float none line-height 1 text-shadow 1px 1px 1px rgba(0,0,0,0.2) box-sizing content-box border-radius