.nf-section{overflow:hidden;position:relative}.nf-section .bg_1{bottom:100px;height:20vw;left:-3.1vw;position:absolute;z-index:0}@media(max-width:767.98px){.nf-section .bg_1{bottom:50px;height:25vw}}.nf-section .bg_2{height:13vw;position:absolute;right:-3.1vw;top:50px;z-index:0}