三角气泡

三角气泡

<div class="tips">你好</div>

.tips {
  display: inline-block;
  position: relative;
  height: 40px;
  padding: 0 26px;
  background: #ff2a1c;
  font-size: 24px;
  font-family: Alibaba PuHuiTi;
  font-weight: 500;
  color: #ffffff;
  line-height: 40px;
  border-radius: 20px;
  text-align: center;
}
.tips::before {
  position: absolute;
  content: "";
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 8px solid #ff2a1c;
}