RWD circle

by Guillaume Seguin

HTML

<div class="root">
 <div class="circle">
  <p>
    Hello !
  </p>
 </div>
</div>

CSS

html,
body {
  height: 100%;
}
.root {
  display: flex;
  justify-content: center;
  height: 100%;
  background-color: black;
}
.circle {
  background-color: red;
  margin: auto;
  border-radius: 50%;
  height: 50vw;
  width: 50vw;
  
  border-style: solid;
  border-color: orange;
  border-width: thin;
  
  display: flex;
}
p {
  margin: auto;
}