How to remove space after ul li item

TopMenu {
    background-color: #101010;
    white-space:nowrap;
    display:inline-block;
    margin: 0;
    padding: 0;
    list-style: none;
    font-size:14px !important;

}

TopMenu a {
    background:  #101010;
    text-decoration: none;
    padding: 0px 0px;
    opacity:0.9;
    padding-left:0px !important;
    margin-top:3px !important;

}

TopMenu a:link {
    color: #999999;
}

TopMenu a:visited {
    color: #999999;
}



TopMenu ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display:none;
    position: absolute;
    z-index: 1000000;
    border: 1px solid #c4c7c8;
}

TopMenu ul ul {
    top: 0;
    left: 100%;
}

TopMenu li {

    margin: 0;
    padding: 0;
    display:inline-block;

}
TopMenu li a {
    display: block;


}
TopMenu ul li {
    position: relative;
    display: block;

}