Element block pseudo-class :active generated with margin auto z-index auto width 450px border-radius display inline-block box-sizing content-box cursor default overflow hidden float none line-height 1 height 600px text-shadow box-shadow 5px 5px 8px rgba(0,0,0,0.25) transform border 2px rgba(180,180,180,1) solid position fixed background font-weight normal transition padding 50px font-size 16px