console 命令行工具 X clear

console

<div class="fallstream">
	<div class="fallstream-list">
  	<div class="fallstream-item"></div>
  </div>
</div>

.fallstream-list,
.fallstream {
  position: relative;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
}
.fallstream-item {
  box-sizing: border-box;
}