<div class="a"></div>
<div class="b"></div>
<div class="c"></div>
<style>
body {
background: #F3AC3C;
}
div {
position: absolute;
}
.a {
width: 200px;
height: 200px;
background: #1A4341;
top: 50;
left: 100;
}
.b {
width: 100px;
height: 100px;
background: #998235;
top: 150;
left: 100;
}
.c {
width: 50px;
height: 50px;
background: #F3AC3C;
top: 200;
left: 150;
}
</style>