JSFiddle - React, Tailwind, and code Playground

HTML

<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>

CSS

* {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 0;
}

.circle {
  display: inline-block;
  background-color: silver;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 3px solid #000;
}

.circle:nth-child(2) {
  background: red;
}
.circle:nth-child(3) {
  background: green;
}
.circle:nth-child(4) {
  background: yellow;
}
.circle:nth-child(5) {
  background: pink;
}
.circle:nth-child(6) {
  background: lightblue;
}
.circle:nth-child(7) {
  background: brown;
}