多个阴影

JSFiddle： https ：//jsfiddle.net/UnsungHero97/80qod7aL/5/

HTML

<div class="box_shadow"></div>

CSS

.box_shadow {
  width: 100px;
  height: 100px;
  margin: 100px;
  box-shadow:
    -52px -52px 0px 0px #f65314,
    52px -52px 0px 0px #7cbb00,
    -52px 52px 0px 0px #00a1f1,
    52px 52px 0px 0px #ffbb00;
}