如何使用CSS创建对角线背景效果

.background {
  background: linear-gradient(to bottom right, #000000, #ffffff);
}

.background {
  position: relative;
}

.background::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform: rotate(45deg);
  background: #000000;
}

.background {
  background: linear-gradient(45deg, #000000 25%, transparent 25%),
              linear-gradient(-45deg, #000000 25%, transparent 25%),
              linear-gradient(45deg, transparent 75%, #000000 75%),
              linear-gradient(-45deg, transparent 75%, #000000 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}