.art-menu {
  position: sticky;
  top: 63px;
  flex: 0 0 300px;
  height: calc(100vh - 63px);
  box-sizing: border-box;
  padding: 160px 0 0 0;
}


.autoMenu ul {
  line-height: 2;
  overflow-y: auto;
  /* background: #fff; */
  /* -webkit-box-shadow: 0 0 10px #CCC;
  -moz-box-shadow: 0 0 10px #CCC;
  box-shadow: 0 0 10px #CCC; */
}

.autoMenu ul>li.sub {
  padding-left: 20px;
}

.autoMenu ul>li>a {
  font-size: 14px;
  color: rgba(0, 0, 0, 0.65);
}

.autoMenu ul>li.active>a {
  color: #166BC7;
  font-weight: bold;
}

.btn-box {
  display: none;
  width: 40px;
  height: 40px;
  text-decoration: none;
  position: relative;
}

.icon-plus-sign {
  display: inline-block;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 4px solid #91ba61;
  background: #91ba61;
  position: absolute;
  top: 3px;
  left: 3px;
}

.icon-plus-sign:before,
.icon-plus-sign:after {
  content: '';
  display: inline-block;
  width: 3px;
  height: 20px;
  background: #fff;
  border-radius: 1px;
  position: absolute;
  top: 3px;
  left: 11.5px;
}

.icon-plus-sign:after {
  -webkit-transform: rotate(90deg);
}

.icon-minus-sign {
  display: inline-block;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 4px solid #ff5370;
  background: #ff5370;
  position: absolute;
  top: 3px;
  left: 3px;
}

.icon-minus-sign:before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 3px;
  background: #fff;
  border-radius: 1px;
  position: absolute;
  left: 3px;
  top: 11.5px;
}