#mega-menu-holder {
    width: auto;
    margin: 0;
    padding: 0;
    list-style-type: none;
    float:right;
}

    #mega-menu-holder li {
        position: relative;
        display: inline-block;
        vertical-align: middle;
    }
    #mega-menu-holder > ul > li > a {
        position: relative;
        padding: 15px 20px;
        display: block;       
        font-size: 15px;        
        color: #8f97ab;
        -o-transition: all .3s linear;
        -moz-transition: all .3s linear;
        -webkit-transition: all .3s linear;
        transition: all .3s linear;
    }
    #mega-menu-holder > ul {
        margin: 0 !important;
        
    }
        #mega-menu-holder > ul > li > a:hover {
            text-decoration: none;
            color: #000;
            -o-transition: all .3s linear;
            -moz-transition: all .3s linear;
            -webkit-transition: all .3s linear;
            transition: all .3s linear;
            font-size: 15.2px;
        }
.menu_button {
    font-size: 30px;
    cursor: pointer;
    float:right;
    margin: 5px 10px 0 0 ;
}
.sidenav {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: #f9f9f9;
    overflow-x: hidden;
    transition: 0.5s;
    padding-top: 60px;
}

    .sidenav a {
        padding: 8px 8px 8px 32px;
        text-decoration: none;
        font-size: 25px;
        color: #818181;
        display: block;
        transition: 0.3s;
    }

        .sidenav a:hover {
            color: #000;
            text-decoration:none;
        }

    .sidenav .closebtn {
        position: absolute;
        top: 0;
        right: 25px;
        font-size: 36px;
        margin-left: 50px;
    }

@media screen and (max-height: 450px) {
    .sidenav {
        padding-top: 15px;
    }

        .sidenav a {
            font-size: 18px;
        }
}