Soft elongated shadow
&:after {
display: block;
position: absolute;
width: 100%;
height: 250%;
top: 98%;
left: 0;
right: 0;
background: linear-gradient(top, rgba(0,0,0,1) 0%,rgba(0,0,0,0) 100%);
opacity: 0.1;
content: "";
transform: skew(-45deg, 0deg);
transform-origin: 50% 0%;
}