JSFiddle - React, Tailwind, and code Playground

HTML

<div class='container'>
  <div class='dummy'></div>
  <div class='content'>content</div>
  <div class='ss'>ssss</div>
  <td>表体1<td>
</div>

CSS

.container {
  background-color: silver;
  width: 100%;
  position: relative;
  display: inline-block;
}

.dummy {
  margin-top: 100%;
}

.content {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
}

JavaScript

var i = 0;
for (i, i < 10; i++) {
  console.log(i);
}