.main-panel {
  background: #f0f8ff;
  margin: 0;
  padding: 0 0 100px 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-family: Helvetica, Tahoma, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  min-width: 1100px;
}

.main-panel .img-bg {
  width: 100%;
}

.main-panel .img-block {
  display: block;
  margin: 0 auto;
  width: 1100px;
}

.main-panel .page {
  margin-bottom: 20px;
}

.fixed {
  position: fixed !important;
  width: 100%;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
}

.wrapper-placeholder {
  padding-top: 50px;
}


.main-panel .menu {
  display: flex;
  height: 50px;
  background: #4177f6;
  align-items: center;
  justify-content: space-around;
  font-size: 18px;
  width: 56%;
  margin: 0 auto 10px;
  border-radius: 24px / 50%;
  
}

.main-panel .menu div {
  text-align: center;
  border-radius: 15%/ 50%;
  padding: 4px 24px;
  cursor: pointer;
  color:#fff;
  font-size: 20px;
  font-weight: 600;
}

.main-panel .menu div.active {
  background: #f8d86d;
  color: #4177f6;
}