CodePen Embed - 2019-12-19-sample-01

<div class="wrapper">
  <div class="inner-wrapper"></div>
</div>

.wrapper {
  width:1000px;
  
}

.inner-wrapper {
  padding: 0 10% 0 10%;
  width: calc(1000px - 20%);
  height: 200px;
  border: 2px solid #ddd;
}

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