.bottom-l-triangle{border-bottom-width:4px;border-left-color:transparent;border-right-color:transparent;border-style:solid;border-top-color:transparent;border-width:0 50px 50px 0;bottom:0;clip-path:polygon(0 100%,0 0,100% 100%);height:0;left:0;position:absolute;width:0}