<!doctype html>
<meta charset="utf-8">
<style>
  .bar {
    width: 200px;
    height: 40px;
  }
  .box {
    display: inline-block;
    width: 40px;
    height: 40px;
    background-image: conic-gradient(black 0 25%, white 0 50%, black 0 75%, white 0);
  }
</style>
<div class="bar">
  <div class="box"></div><div class="box"></div><div class="box"></div><div class="box"></div><div class="box"></div>
</div>
<div class="bar">
  <div class="box"></div><div class="box"></div><div class="box"></div><div class="box"></div><div class="box"></div>
</div>
<div class="bar">
  <div class="box"></div><div class="box"></div><div class="box"></div><div class="box"></div><div class="box"></div>
</div>
<div class="bar">
  <div class="box"></div><div class="box"></div><div class="box"></div><div class="box"></div><div class="box"></div>
</div>
<div class="bar">
  <div class="box"></div><div class="box"></div><div class="box"></div><div class="box"></div><div class="box"></div>
</div>