Responsive Menu css in MyBB by WallBB

Responsive Menu css by WallBB

/* 
Tutorial by WallBB 
http://wallbb.co.uk
*/
.toggle, [id^="drop"] {
    display: none;
}
nav {
    background: #333;
    margin: 0;
    padding: 0;
}
nav::after {
    clear: both;
    content: "";
    display: table;
}
nav ul {
    list-style: outside none none;
    margin: 0;
    padding: 0;
    position: relative;
}
nav ul li {
    border-left: 1px solid #555;
    display: inline-block;
    float: left;
    margin: 0;
}
nav a {
    background: #222;
    color: #fff;
    display: block;
    font-family: Helvetica,Arial,Verdana,sans-serif;
    font-size: 12px;
    padding: 10px 15px;
    text-decoration: none;
}
nav ul li ul li:hover {
    background: #444 none repeat scroll 0 0;
}
nav a:hover {
    background-color: #000000;
}
nav ul ul {
    display: none;
    position: absolute;
    top: 35px;
}
nav ul li:hover > ul {
    display: inherit;
}
nav ul ul li {
    display: list-item;
    float: none;
    position: relative;
    width: 170px;
}
nav ul ul ul li {
    left: 170px;
    position: relative;
    top: -60px;
}
nav ul li > a::after {
    content: " ";
    display: inline;
    font-family: fontawesome;
}
nav ul li > a:only-child::after {
    content: "";
}
@media all and (max-width: 768px) {
nav {
    margin: 0;
}
.toggle + a, .menu {
    display: none;
}
.toggle {
    background: #333;
    border: medium none;
    color: #ffffff;
    display: block;
    font-family: Helvetica,Arial,Verdana,sans-serif;
    font-size: 12px;
    padding: 10px 15px;
    text-decoration: none;
}
.toggle:hover {
    background-color: #000000;
}
[id^="drop"]:checked + ul {
    display: block;
}
nav ul li {
    display: block;
    width: 100%;
}
nav ul ul .toggle, nav ul ul a {
    padding: 0 40px;
}
nav ul ul ul a {
    padding: 0 80px;
}
nav a:hover, nav ul ul ul a {
    background-color: #000000;
}
nav ul li ul li .toggle, nav ul ul a, nav ul ul ul a {
    color: #ffffff;
    font-size: 12px;
    padding: 10px 15px;
}
nav ul li ul li .toggle, nav ul ul a {
    background-color: #212121;
}
nav ul ul {
    color: #ffffff;
    float: none;
    position: static;
}
nav ul ul li:hover > ul, nav ul li:hover > ul {
    display: none;
}
nav ul ul li {
    display: block;
    width: 100%;
}
nav ul ul ul li {
    position: static;
}
}
@media all and (max-width: 330px) {
nav ul li {
    display: block;
    width: 94%;
}
}
@media only screen and (min-width: 769px) {
nav ul {
    margin-left: 8%;
}
nav ul ul {
    margin-left: 0;
}
}