CSSでリロード(更新)ボタンを作る。

<div class="reload blue" onclick="window.location.reload();"></div>

.reload{
  position: relative;
  width: 100px;
  height: 100px;
  border: 10px solid;
  border-right-color: transparent;
  border-radius: 100%;
  box-sizing: border-box;
}

.reload:before{
  position: absolute;
  top: 18px;
  right: -10px;
  content: "";
  height: 50%;
  border: 20px solid transparent;
  border-top: 30px solid;
  background: transparent;
  transform-origin: left top;
  transform: rotate(-40deg);
  box-sizing: border-box;
}

.blue{
  color: blue;
}