#email-list {
    display: none;
    position: absolute;
    background-color: #fff;
    border: 1px solid #ccc;
    padding: 5px;
    width: 200px;
    z-index: 99999;
    list-style-type:none;
}

    #email-list li {
        cursor: pointer;
    }

        #email-list li:hover {
            background-color: #f2f2f2;
        }