<!DOCTYPE html>
<style>
.box {
  width: 100px;
  height: 100px;
  background: green;
  display: inline-block;
}
</style>

There should be 4 100x100 green squares (no rounded corners) below.<br>
<div class="box"></div>
<br>
<div class="box"></div>
<br>
<div class="box"></div>
<br>
<div class="box"></div>
