Upon closer inspection, Ed raised concerns about the challenges of resolving various superfish/css issues for a responsive menu.
After exploring different options here and elsewhere, I stumbled upon a Pure CSS responsive menu that proved to be more efficient and easier to customize compared to superfish. Additionally, it does not require the overheads of jquery or javascript and offers second-level menus.
I verified the demo using screenfly to ensure responsiveness and mobile layout suitability prior to utilization. The version on CSSscript.com (linked above) presents a horizontal responsive layout for mobile devices, unlike the one displayed on the codepen demo page.
https://i.sstatic.net/LVlAA.jpg
https://i.sstatic.net/iG9gZ.jpg
The code is contained in a single HTML file which can be effortlessly split into a linked CSS file. Only 2 media queries handle responsive adjustments, with minimal modifications required. The '+' symbols can be removed without any adverse effects.
There's only one minor drawback: the initial link downloads an HTML containing javascript at the bottom, including obvious Google Analytics tracking. However, this can be easily eliminated and is not present on codepen.
Explanation author Andor Nagy - code from codepen
/* CSS Document */
@import url(http://fonts.googleapis.com/css?family=Open+Sans);
@import url(http://fonts.googleapis.com/css?family=Bree+Serif);
body {
background: #212121;
font-size:22px;
line-height: 32px;
color: #ffffff;
word-wrap:break-word !important;
font-family: 'Open Sans', sans-serif;
}
h1 {
font-size: 60px;
text-align: center;
color: #FFF;
}
h3 {
font-size: 30px;
text-align: center;
color: #FFF;
}
h3 a {
color: #FFF;
}
a {
color: #FFF;
}
h1 {
margin-top: 100px;
text-align:center;
font-size:60px;
font-family: 'Bree Serif', 'serif';
}
#container {
margin: 0 auto;
max-width: 890px;
}
p {
text-align: center;
}
#relatedContent {
max-width: 800px;
margin: 200px auto;
}
#relatedContent .item {
max-width: 44%;
padding: 3%;
float: left;
text-align: center;
}
#relatedContent .item a img {
max-width: 100%;
}
nav {
margin: 50px 0;
background-color: #E64A19;
}
nav ul {
padding:0;
margin:0;
list-style: none;
position: relative;
}
nav ul li {
display:inline-block;
background-color: #E64A19;
}
nav a {
display:block;
padding:0 10px;
color:#FFF;
font-size:20px;
line-height: 60px;
text-decoration:none;
}
nav a:hover {
background-color: #000000;
}
/* Hide Dropdowns by Default */
nav ul ul {
display: none;
position: absolute;
top: 60px;
}
/* Display Dropdowns on Hover */
nav ul li:hover > ul {
display:inherit;
}
/* Fisrt Tier Dropdown */
nav ul ul li {
width:170px;
float:none;
display:list-item;
position: relative;
}
/* Second, Third and more Tiers*/
nav ul ul ul li {
position: relative;
top:-60px;
left:170px;
}
/* Change this in order to change the Dropdown symbol */
li > a:after { content: ' +'; }
li > a:only-child:after { content: ''; }
<div id="container">
<nav>
<ul>
<li><a href="#">Home</a></li>
<li><a href="#">WordPress</a>
<!-- First Tier Drop Down -->
<ul>
<li><a href="#">Themes</a></li>
<li><a href="#">Plugins</a></li>
<li><a href="#">Tutorials</a></li>
</ul>
</li>
<li><a href="#">Web Design</a>
<!-- First Tier Drop Down -->
<ul>
<li><a href="#">Resources</a></li>
<li><a href="#">Links</a></li>
<li><a href="#">Tutorials</a>
<!-- Second Tier Drop Down -->
<ul>
<li><a href="#">HTML/CSS</a></li>
<li><a href="#">jQuery</a></li>
<li><a href="#">Other</a>
<!-- Third Tier Drop Down -->
<ul>
<li><a href="#">Stuff</a></li>
<li><a href="#">Things</a></li>
<li><a href="#">Other Stuff</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
<li><a href="#">Graphic Design</a></li>
<li><a href="#">Inspiration</a></li>
<li><a href="#">Contact</a></li>
<li><a href="#">About</a></li>
</ul>
</nav>
<h1>Pure CSS Drop Down Menu</h1>
<p> A simple dropdown navigation menu made with CSS Only. Dropdowns are marked with a plus sign ( + )</p>
<p>Read tutorial <a target="_blank" href="http://webdesignerhut.com/css-dropdown-menu/">here</a></p>
</div>