Element block pseudo-element :after generated with line-height 1 text-shadow transform background box-sizing border-box overflow visible width 300px padding 0px float left z-index auto position fixed cursor default transition display inline-block font-weight normal outline none height 300px border-radius opacity 0.13 font-size 16px margin 0px box-shadow 5px 5px 8px rgba(0,0,0,0.5) border 0px rgba(0,0,0,1) solid