Element button pseudo-class :active generated with z-index auto border 1px rgba(0,0,0,1) solid background position fixed padding 20px outline none font-size 16px text-shadow width 150px font-weight normal cursor default float none line-height normal margin 0px height 150px opacity 1 transition box-sizing border-box display block border-radius transform overflow scroll box-shadow 0px 0px 9px rgba(0,0,0,0.5)