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