ul.dropdown-menu {
    overflow: scroll !important;
    max-height: 450px !important;
}


/* side sticky style. */

.sticky1-container1 {
    padding: 0px;
    margin: 0px;
    position: fixed;
    right: -152px;
    top: 230px;
    width: 210px;
    z-index: 1100;
}
.sticky1 li {
    list-style-type: none;
    color: #efefef;
    height: 73px;
    padding: 0px;
    margin: 0px 0px 1px 0px;
    -webkit-transition: all 0.25s ease-in-out;
    -moz-transition: all 0.25s ease-in-out;
    -o-transition: all 0.25s ease-in-out;
    transition: all 0.25s ease-in-out;
    cursor: pointer;
}