<h1>Complex Background Patterns</h1>
<div class="item">
  <p class="title">tablecloth pattern</p>
  <div class="container tablecloth">
  </div>
</div>
<div class="item">
  <p class="title">blueprint pattern</p>
  <div class="container blueprint">
  </div>
</div>
<div class="item">
  <p class="title">advanced blueprint pattern</p>
  <div class="container advanced">
  </div>
</div>
<div class="item">
  <p class="title">polka dot pattern</p>
  <div class="container dot">
  </div>
</div>
<div class="item">
  <p class="title">checkerboards pattern</p>
  <div class="container checkerboards">
  </div>
</div>
html, body {
  min-height: 100%;
}

body {
  background-color: #ffdfc3;
  padding: 2em;
  font-family: palatino;
}

h1 {
  text-align: center;
  font-size: 500%;
  color: #ca133f;
  text-shadow: 0 2px white;
}

.item {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 2em 0;
}

.title {
  font-size: 2.8em;
  color: #9c6a4f;  
  text-shadow: 0 2px white;
}

.container {
  width: 800px;
  height: 200px;
  box-shadow: 2px 2px 5px 0 hsla(0,0%,0%,.4);
  border-radius: 1em;
  background-color: white;
}

.tablecloth {
  background: white;
  background-image:
    linear-gradient(90deg, rgba(200,0,0,.5) 50%, transparent 0),
    linear-gradient(rgba(200,0,0,.5) 50%, transparent 0);
  background-size: 30px 30px;
}

.blueprint {
  background: #58a;
  background-image:
    linear-gradient(white 1px, transparent 0),
    linear-gradient(to right, white 1px, transparent 0);
  background-size: 30px 30px;
}

.advanced {
  background: #58a;
  background-image:
    linear-gradient(white 2px, transparent 0),
    linear-gradient(90deg, white 2px, transparent 0),
    linear-gradient(hsla(0,0%,100%,.3) 1px, transparent 0),
    linear-gradient(90deg, hsla(0,0%,100%,.3) 1px, transparent 0);
  background-size: 
    75px 75px,
    75px 75px,
    15px 15px,
    15px 15px;
}

.dot {
  background: #655;
  background-image:
    radial-gradient(tan 30%, transparent 0),
    radial-gradient(tan 30%, transparent 0);
  background-size: 30px 30px;
  background-position: 0 0, 15px 15px;
}

.checkerboards {
  background: #eee;
  background-image: 
    linear-gradient(45deg, #bbb 25%, transparent 0),
    linear-gradient(45deg, transparent 75%, #bbb 0),
    linear-gradient(45deg, #bbb 25%, transparent 0),
    linear-gradient(45deg, transparent 75%, #bbb 0);
  background-position: 0 0, 15px 15px, 15px 15px, 30px 30px;
  background-size: 30px 30px;
  
}

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