.mask {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  opacity: 0.6;
  background: #000000;
}

.mask .arrow {
  position: absolute;
  width: 26%;
  height: 15.5%;
  top: 4%;
  right: 7%;
  background: url(./img/arrow.png);
  background-size: 100% 100%;
}

.mask .content {
  position: absolute;
  top: 22%;
  left: 50%;
  width: 220px;
  margin-left: -110px;
  font-family: PingFangSC-Medium;
  font-size: 1.2rem;
  color: #ffffff;
  line-height: 32px;
}

.mask .content .point {
  display: inline-block;
  width: 1.7rem;
  height: 1.3rem;
  background: url(./img/point.png);
  background-size: 100% 100%;
  vertical-align: middle;
}

.mask .content .safari {
  display: inline-block;
  width: 1.3rem;
  height: 1.3rem;
  background: url(./img/safari.png);
  background-size: 100% 100%;
  vertical-align: sub;
}