.left-sub-menu {
    position: sticky;
    top: 0;
}

.left-sub-menu {
    border: 1px solid #2a9dd6;
    border-radius: 5px;
}

.left-sub-menu ul {
    list-style: none;
    padding: 0;
    margin-bottom: 0;
}

.left-sub-menu ul li {
    border-top: 0;
    padding: 0px;
    color: #2a9dd6;
    border-bottom: 1px solid #2a9dd6;
}

.left-sub-menu ul li.active {
    background-color: #2a9dd6;
}

.left-sub-menu h3 {
    font-size: 20px;
    padding: 10px 0 10px 15px;
    border-bottom: 1px solid #2a9dd6;
    margin-bottom: 0;
    color: #fff;
    background-color: #2a9dd6;
}

.left-sub-menu ul h3:hover {
    background-color: #2a9dd6;
    color: #fff;
}

.left-sub-menu h4 {
    font-size: 16px;
    padding: 10px 0 10px 15px;
    border-bottom: 1px solid #2a9dd6;
    margin-bottom: 0;
}

    .left-sub-menu .sub-heading {
        font-size: 18px;
        color: #2a9dd6 !important;
    }

    .left-sub-menu ul li a {
        color: #2a9dd6;
        padding: 10px 15px;
        display: block;
        font-size: 14px;
        text-decoration: none;
        transition: transform .2s;
    }

.left-sub-menu ul li a:hover {
    color: #FFAE27;
    -ms-transform: scale(1.03);
    /* IE 9 */
    -webkit-transform: scale(1.03);
    /* Safari 3-8 */
    transform: scale(1.03);

    /* -ms-transform: scale(0.9);
    -webkit-transform: scale(0.9); 
    transform: scale(0.9); */
}

.left-sub-menu ul li.active a {
    color: #fff;
}

.display-none{
    display: none !important;
}