html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #f6f6f6;
}

.container {
  width: 560px;
  height: 400px;
  background-color: #95a5a6;
  position: relative;
  box-shadow: 0 0 20px 1px  #aaa;
  border-radius: 10px 10px 00;
  overflow: hidden;
}

.container .bar-container {
  width: 100%;
  position: absolute;
  bottom: 0;
  left: 0;
}

.container .bar-container .bar-bg-container {
  overflow: hidden;
  box-sizing: border-box;
  height: 60px;
  display: flex;
  justify-content: space-between;
}

.container .bar-container .bar-bg-container .lt {
  background-color: #fff;
  height: 100%;
  width: 30px;
  border-top-right-radius: 21px;
  transition: all .2s;
}

.container .bar-container .bar-bg-container .cirle-container {
  background-color: transparent;
  width: 100px;
  position: relative;
  z-index: 2;
}

.container .bar-container .bar-bg-container .cirle-container .cirle {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: -50px;
  width: 106px;
  height: 100px;
  border-radius: 50%;
  box-shadow: 0 160px 0 100px #fff;
}

.container .bar-container .bar-bg-container .rt {
  background-color: #fff;
  height: 100%;
  flex: 1;
  border-top-left-radius: 21px;
}

.container .bar-container .content-body {
  padding: 0;
  margin: 0;
  list-style: none;
  display: flex;
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  padding: 0 30px;
  z-index: 3;
}

.container .bar-container .content-body .bar-iten {
  width: 100px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: #6e6d6d;
  font-size: 13px;
  cursor: pointer;
}

.container .bar-container .content-body .bar-iten .iconfont {
  font-size: 24px;
  margin-bottom: 3px;
}

.container .bar-container .content-body .bar-iten.active {
  background-color: #feaf2d;
  height: 100px;
  border-radius: 50%;
  color: #fff;
  transform: translateY(-60%);
  transition: transform 0.3s cubic-bezier(0.29, 1.88, 0.88, 0.32);
}

.container .bar-container .content-body .bar-iten.active .text {
  font-weight: bold;
}