CodePen Embed - PombMxq

<div class="clearfix">
  <div class="float-box">1</div>
  <div class="float-box">2</div>
  <div class="float-box">3</div>
</div>
<div class="new-box"></div>

.clearfix::after {
  content: "";
  clear: both;
  display: block;
}

.float-box {
  width: 100px;
  height: 100px;
  background: orange;
  margin: 10px;
  float: left;
}

.new-box {
  width: 250px;
  height: 250px;
  background: red;
}

This Pen is owned by Lee Jeong Min on CodePen.

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