.online-area-calculation{width:242px; height:152px ;}.rectangle{width:75px; height:50px ;}.triangle{width:75px; height:50px ;}.zoz{width:75px; height:50px ;}.circle{width:75px; height:50px ;}.sector{width:75px; height:50px ;}.ellipse{width:75px; height:50px ;}.parallelogram{width:75px; height:50px ;}