.NavBar {
  font-size: 3.2vw;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  min-height: 13.333vw;
  width: 100%;
  z-index: 99;
  background-color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: center;
  webkit-box-shadow: 0 1px 4px -2px #000;
  box-shadow: 0 1px 4px -2px #000;
}

.NavBar > a {
  position: relative;
  height: 10.667vw;
  flex: 1;
  color: #999999;
  flex-direction: column;
  display: flex;
  align-items: center;
  justify-content: center;
}

/*选中后的样式*/
.NavBar > a.cue {
  color: #226ebc;
}

.NavBar > a > span:nth-of-type(1) {
  font-size: 4.8vw;
  margin-bottom: 0.533vw;
}

.newpoint {
  font-size: 3.2vw;
  position: absolute;
  right: 6.667vw;
  top: -0.533vw;
  color: #fff;
  background-color: red;
  width: 5.333vw;
  height: 5.333vw;
  border-radius: 50%;
  line-height: 5.333vw;
}

/* 返回顶部 */
.btn-scroll {
  position: fixed;
  bottom: 25%;
  right: 1.333vw;
  height: 11.733vw;
  width: 11.733vw;
  line-height: 12.8vw;
  text-align: center;
  display: none;
}
.btn-scroll img {
  width: 100%;
  height: 100%;
}
.hiddened {
  display: none;
}