console 命令行工具 X clear

console

<div class="header">
  <div class="header__left">左浮</div>
  <div class="header__right">右浮</div>
  <div class="header__clear"></div>
</div>

.header {
  background-color: #d00;
}

.header__left {
  float: left;
}

.header__right {
  float: right;
}

.header__clear {
  clear: both;
}