.m_a1{padding: 75px 0; background: #f7f7f7}
.m_a2{padding: 70px 0}

.m_a2{margin-left: -3%; display:flex; flex-wrap:wrap}
.m_a2 > *{float: left; width: 47%; margin-left: 3%;}

@media (max-width:720px){
	.m_a1{padding: 40px 0}
	.m_a2{margin-left: 0; padding: 40px 0}
	.m_a2 > *{width: 100%; margin: 30px 0 0;}
	.m_a2 > *:first-child{margin-top: 0;}
}