<div class="box1">
</div>
.box1 {
width: 260px;
height: 46px;
background: radial-gradient(circle at 200px 5px, transparent 5px, #fee677 5px),radial-gradient(circle at 200px 5px, transparent 5px, #fee677 5px) right top;
background-size: 50% 100%;
background-repeat: no-repeat;
}