CSS伪随机背景条纹
利用到质数的公倍数与公约数技巧
div {
background: hsl( 20, 40%, 90%);
background- image: linear- gradient( 90deg, #fb3 11px, transparent 0), linear- gradient( 90deg, #ab4 23px, transparent 0), linear- gradient( 90deg, #655 41px, transparent 0);
background- size: 41px 100%, 61px 100%, 83px 100%;
}