<div class='cont'>
<div class='rect'></div>
<div class='lrg cir'></div>
<div class='med cir'></div>
<div class='sml cir'></div>
</div>
<style>
* {
margin: 0;
}
div {
position: absolute;
background: #6592CF;
}
.cont {
display: flex;
justify-content: center;
align-items: center;
height: 100%;
width: 100%
}
.cir {
border-radius: 50%;
}
.sml {
width: 50px;
height: 50px;
background: #EEB850;
}
.med {
width: 150px;
height: 150px;
background: #243D83;
}
.lrg {
width: 250px;
height: 250px;
background: #6592CF;
}
.rect {
width: 300px;
height: 150px;
background: #243D83;
}
</style>