.mainSections{
 width: 980px;
 margin: 240px auto 280px;
	color: #333;
}
.mainSections h1{
	font-size: 2.4rem;
	line-height: 4.6rem;
	text-align: center;
	position: relative;
}
.mainSections h1::after {
    content: '';
    display: block;
    position: absolute;
    left: calc(50% - 30px);
    bottom: -52px;
    width: 60px;
    height: 2px;
    background-color: #e60012;
}