console 命令行工具 X clear

console

<span class="triangle-arrow"></span>

.triangle-arrow {
  display: inline-block;
  width: 30px;
  height: 30px;
  border-top: 30px solid #4189ff;
  border-left: 30px solid transparent;
  border-right: 30px solid transparent;
  box-sizing: border-box;
}