.left_nav_item{
	display: flex;
	align-items: center;
}
.left_nav_item>a {
  position: relative;
  text-align: left;
  font-size: 16px;
  line-height: 20px;
  color: #666;
  padding-left: 15px;
  display: inline-block;
  min-width: 69px;
  overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
  
}

.left_nav_item>a::before {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  content: "";
  background-color: transparent;
  height: 0;
  display: inline-block;
  -webkit-transition: all .3s ease-in-out;
  transition: all .3s ease-in-out;
}

.left_nav_item:hover>a::before {
  height: 20px;
  background-color: #206BD1;
}

.left_nav_item:hover>a {
  color: #206BD1;
  transition: all .3s ease-in-out;
}

.left_nav_item .left_nav_active {
  color: #206BD1;
}

.left_nav_item .left_nav_active::before {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  content: "";
  background-color: #206BD1;
  height: 21px;
  display: inline-block;
}