<div class="container">
  <div class="wrapper">
  <div class="example">
    <div>Item One</div>
  </div>
</div>
</div>
* {
  box-sizing: border-box;
}
:root {
  --color1: #80b2c9;
  --color2: #1981a1;
  --color3: #354a53;
  --color4: #1f0945;
  --color-text: #171717;
}

body {
  margin: 0;
  padding: 40px;
  font: 1.2em "Raleway", sans-serif;
  background-color: #fff;
  color: var(--color-text);
}

.container {
  background-color: #ddddda;
  height: 720px;
  width: 1280px;
  padding: 20px 40px;
  position: relative;
}

.wrapper {
  background-color: white;
  width: 800px;
  margin: 40px auto;
  padding: 20px;
}


.example {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  margin-bottom: 2em;
  background-color: var(--color1);
  padding: 10px;
  block-size: 400px;
}

.example::before {
  content: "";
  background-color: var(--color2);
}

.example::after {
  content: "";
  background-color: var(--color4);
}

.example > * {
  border-radius: 10px;
  background-color: var(--color3);
  color: white;
  padding: 20px;
}
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External CSS

  1. https://fonts.googleapis.com/css2?family=Acme&amp;family=Raleway&amp;display=swap

External JavaScript

This Pen doesn't use any external JavaScript resources.