src/styles/mixins/_circle-shadow.scss
@mixin voxel-circle-shadow($shadow--color, $shadow--radius, $shadow--height, $shadow--width) {
box-shadow: $shadow--color 0 0 $shadow--radius 0;
@include transform(translateX(-50%));
border-radius: 50%;
bottom: 0;
content: "";
height: $shadow--height;
left: 50%;
position: absolute;
width: $shadow--width;
z-index: -1;
}