<!DOCTYPE html>
<style>
.box {
position: relative;
padding-top: 50px;
}
.inner {
display: block;
position: absolute;
width: 100%;
height: 100%;
background: linear-gradient(90deg, #FDDE5C 0%, #F8AB5E 16.66667%, #F56A62 33.33333%, #A176C8 50%, #759BEB 66.66667%, #65BEB3 83.33333%, #70DB96);
}
</style><div class="box"><div class="inner"></div></div>