使用CSS实现笛卡尔失真效果

<div class="container"></div>

.container {
  width: 400px;
  height: 400px;
  background-color: #000;
  position: relative;
}

.container::before {
  content: "";
  width: 100%;
  height: 100%;
  background-color: #fff;
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
}

.container::before {
  /* ... */
  transform: rotate(45deg) scale(1.5, 0.5);
}

.container {
  width: 400px;
  height: 400px;
  background-color: #000;
  position: relative;
}

.container::before {
  content: "";
  width: 100%;
  height: 100%;
  background-color: #fff;
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  transform: rotate(45deg) scale(1.5, 0.5);
}