.headingBottomLine{position:relative}.headingBottomLine:before{content:"";position:absolute;bottom:0;left:0;background-color:#cfd6db;height:1px;width:100%}.headingBottomLine:after{content:"";position:absolute;bottom:0;left:0;background-color:#fdce4b;height:4px;width:40px;transition-duration:.5s}.headingBottomLine:hover:after{width:100%;transition-duration:.5s}