相关疑难解决方法(0)

.chess {
  background-image: 
    linear-gradient(90deg, #999 30px, white 30px), 
    linear-gradient(90deg, white 30px, #999 30px), 
    linear-gradient(90deg, #999 30px, white 30px), 
    linear-gradient(90deg, white 30px, #999 30px), 
    linear-gradient(90deg, #999 30px, white 30px), 
    linear-gradient(90deg, white 30px, #999 30px), 
    linear-gradient(90deg, #999 30px, white 30px);
  background-position: 0 0, 0 30px, 0 60px, 0 90px, 0 120px;
  background-repeat: repeat-x;
  background-size: 60px 30px;
  height: 150px;
  margin: 15px auto;
  width: 30%;
}


.fas {
  text-align: center;
  font-size: 10em
}

<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.7.2/css/all.min.css" rel="stylesheet" />
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous"> …