<div class="arc">
  360°
</div>

.arc {
  display: flex;
  justify-content: center;
  align-items: center;
  position:relative;  
  margin-top: 80px;
  color:#d2691e;
}
.arc:before {
  position:absolute;
  content:'';
  bottom:-20px;
  width: 80%;
    border-bottom:2px solid #d2691e;
  border-radius:50%;
  height: 180px;
}