<div class="a"></div>
<div class="b"></div>
<div class="c"></div>
<style>
body {
background: #6592CF;
}
div {
width: 80px;
height: 40px;
background: #0000;
position: absolute;
border-radius: 80px 80px 0 0;
border: 20px solid #060F55;
border-bottom: 0;
}
.a {
top: 40;
right: 40;
}
.b {
top: 40;
left: 40;
}
.c {
transform: rotate(180deg);
bottom: 40;
left: 140
}
</style>