相关疑难解决方法(0)

div {
  counter-reset: ruler;
}

div > span {
  display: block;
  line-height: 1rem;
}

div > span::before {
  counter-increment: ruler;
  content: counter( ruler ) ' ';
}

<div>
  <span>Hello, World!</span>
  <span>Hello, World!</span>
  <span>Hello, World!</span>
  <span>Hello, World!</span>
  <span>Hello, World!</span>
  <span>Hello, World!</span>
  <span>Hello, World!</span>
  <span>Hello, World!</span>
  <span>Hello, World!</span>
  <span>Hello, World!</span>
  <span>Hello, World!</span>
  <span>Hello, World!</span>
  <span>Hello, World!</span>
</div>