body{background-color: #333 ;  }
.main{width: 100%;  height: fit-content;  background-color: #ddd;  overflow-x: hidden;}
.ruler{width;4001px;}
.lineinfo{color: #00ef00;  font-size: 1.5rem;  margin-top: 10px}
.lineinfomain{width: 100%;  text-align: center}