SOURCE

<div class="content">
  <div class="circle c1"></div>
  <div class="circle c2"></div>
  <div class="circle c3"></div>
  <div class="circle c4"></div>
  <div class="circle c5" ></div>
</div>

.circle{
  width:100px;
  height: 100px;
  border: 10px solid black;
  border-radius: 50%;
}
.content {
  position: absolute;
  width: 320px;
  height: 170px;
  left: 50%;
  top: 50%;
  margin-left: -160px;
  margin-top: -85px;
}
.c1{
  position: absolute;
  border-color: red;
  top: 50px;
  left: 50px;
}
.c2{
  position: absolute;
  border-color: green;
  left: 100px;
}
.c3{
  position:absolute;
  border-color: orange;
  top: 50px;
  left: 150px;
}
.c4{
  position: absolute;
  border-color: blue;
  left: 200px;
}
.c5{
  position: absolute;
  border-color: purple; 
}