<div class='cont'>
<div class='_cont'>
<div class='q un'></div>
<div class='q du'></div>
</div>
<div class='_cont'>
<div class='q tr'></div>
<div class='q qt'></div>
</div>
</div>
<style>
body {
background: #E3516E;
}
.cont {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
height: 100%;
}
._cont {
display: flex;
}
.q {
width: 100px;
height: 100px;
}
.un {
border-radius: 100% 0 0 0;
background: #51B5A9;
}
.du {
border-radius: 0 100% 0 0;
background: #FADE8B;
}
.tr {
border-radius: 0 0 0 100%;
background: #F7F3D7;
}
.qt {
border-radius: 0 0 100% 0;
background: #E3516E;
}
</style>