.first-section-back{position:absolute;top:-25%;top:-20%;left:50%;transform:translateX(-50%);width:90%;height:39.68rem;animation:slide-down3 1s forwards;animation-delay:.5s;z-index:-1}@keyframes slide-down3{from{top:-25%}100%{top:30px}}@-webkit-keyframes slide-down3{from{top:-25%}100%{top:30px}}@media(max-width:1440px) and (min-width:768px){.first-section-back{width:85%}.blog-list .first-section-back{height:32.815rem !important}}@media(max-width:767px){.first-section-back{width:90%;height:100vh !important}}