HTML5 boilertemplate - html

Question

I integrated html boilertemplate with the help of the initializr on my side.
Now, i tried to add sub ul elements to the navigation in form of a dropdown, that got created by the initializr with pure css3, but i can't get it to work.
The css from boilertemplate created for the nav element is the following:
nav ul {
margin: 0;
padding: 0;
}
nav a {
display: block;
margin-bottom: 10px;
padding: 15px 0;
text-align: center;
text-decoration: none;
font-weight: bold;
color: white;
background: green;
}
nav a:hover,
nav a:visited {
color: white;
}
nav a:hover {
text-decoration: underline;
}
#media only screen and (min-width: 480px) {
/* ====================
INTERMEDIATE: Menu
==================== */
nav a {
float: left;
width: 13%;
margin: 0 1.7%;
padding: 10px 2%;
margin-bottom: 0;
}
nav li:first-child a {
margin-left: 0;
}
nav li:last-child a {
margin-right: 0;
}
/* ========================
INTERMEDIATE: IE Fixes
======================== */
nav ul li {
display: inline;
}
.oldie nav a {
margin: 0 0.7%;
}
}
#media only screen and (min-width: 768px) {
nav {
float: left;
width: 100%;
}
}
The solution i tried did not work with css3 from:
http://line25.com/tutorials/how-to-create-a-pure-css-dropdown-menu
How can i add sub elements / sub ul's to the navigation , so that they are displayed in a drop down to the hovered element?
In the end, i hoped it would have worked like in their example:
http://line25.com/wp-content/uploads/2012/css-menu/demo/index.html
Regards

Answer 1

You are missing some key CSS rules. Specifically:
nav ul li:hover > ul {
display: block;
}
Also, what is your html? Can't you simply copy and paste the code from the example you have linked to?

Answer 2

EDIT: Taken from the link you have provided, this should give you the desired effect; change values as needed.
nav ul ul {
display: none;
}
nav ul li:hover > ul {
display: block;
}
nav ul {
background: #efefef;
background: linear-gradient(top, #efefef 0%, #bbbbbb 100%);
background: -moz-linear-gradient(top, #efefef 0%, #bbbbbb 100%);
background: -webkit-linear-gradient(top, #efefef 0%,#bbbbbb 100%);
box-shadow: 0px 0px 9px rgba(0,0,0,0.15);
padding: 0 20px;
border-radius: 10px;
list-style: none;
position: relative;
display: inline-table;
}
nav ul:after {
content: ""; clear: both; display: block;
}
nav ul li {
float: left;
}
nav ul li:hover {
background: #4b545f;
background: linear-gradient(top, #4f5964 0%, #5f6975 40%);
background: -moz-linear-gradient(top, #4f5964 0%, #5f6975 40%);
background: -webkit-linear-gradient(top, #4f5964 0%,#5f6975 40%);
}
nav ul li:hover a {
color: #fff;
}
nav ul li a {
display: block; padding: 25px 40px;
color: #757575; text-decoration: none;
}
nav ul ul {
background: #5f6975; border-radius: 0px; padding: 0;
position: absolute; top: 100%;
}
nav ul ul li {
float: none;
border-top: 1px solid #6b727c;
border-bottom: 1px solid #575f6a; position: relative;
}
nav ul ul li a {
padding: 15px 40px;
color: #fff;
}
nav ul ul li a:hover {
background: #4b545f;
}
nav ul ul ul {
position: absolute; left: 100%; top:0;
}