<div class="sky">
   <div class="sea"></div>
  <div class="star1">★</div>
  <div class="star2">★</div>
  <div class="star3">★</div>
  <div class="moon">●</div>
</div>
.sky{
  width: 200px;
  height:200px;
  background: #b22222;
  position: relative;
}
.sea{
  width: 100%;
  height: 80px;
  background: #00008b;
  opacity: 0.9;
  position: absolute;
  bottom: 0;
}
.star1{
  color: #fff;
  font-size: 10px;
  position: absolute;
  top: 10px;
  left: 10px;
}
.star2{
  color: #fff;
  font-size: 10px;
  position: absolute;
  top: 50px;
  left: 80px;
}
.star3{
  color: #fff;
  font-size: 10px;
  position: absolute;
  bottom: 180px;
  right: 10px;
}
.moon{
  color: #fff;
  font-size: 100px;
  width: 100px;
  position: absolute;
  bottom: 10px;
  left: 0;
  right: 0;
  margin: auto;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

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