Making a scrollable dropdown menu for my page - html

Question

I wanted to make a scrollable dropdown menu for my site. I read through a lot of page talking about scrollable dropdown menu but their code doesn't work. However,my dropdown menu still cannot show a scrollable dropdown menu.
HTML
<li>
Team Profile
<ul>
<li>Chelsea</li>
<li>Man City</li>
<li>Southampton</li>
<li>Man Utd</li>
<li>Arsenal</li>
<li>Liverpool</li>
<li>West Ham</li>
<li>Newcastle</li>
<li>Leichester</li>
<li>QPR</li>
<li>Burnley</li>
<li>Aston Villa</li>
<li>Stoke City</li>
<li>Crystal Palace</li>
<li>Hull City</li>
<li>Sunderland</li>
<li>Tottenham Hotspur</li>
<li>Everton</li>
<li>Swansea</li>
<li>West Brom</li>
</ul>
</li>
CSS
.myDropDown
{
height: 50px;
overflow: auto;
}
.nav ul {
*zoom:1;
list-style:none;
margin:0;
padding:0;
background:#333;
}
.nav ul:before,.nav ul:after {
content:"";
display:table;
}
.nav ul:after {
clear:both;
}
.nav ul > li {
float:left;
position:relative;
}
.nav a {
display:block;
padding:10px 20px;
line-height:1.2em;
color:#fff;
border-left:1px solid #595959;
}
.nav a:hover {
text-decoration:none;
background:#595959;
}
.nav li ul {
background:#273754;
}
.nav li ul li {
width:200px;
}
.nav li ul a {
border:none;
}
.nav li ul a:hover {
background:rgba(0,0,0,0.2);
}
.nav li ul {
position:absolute;
left:0;
top:36px;
z-index:1;
max-height:0;
overflow:hidden;
-webkit-transform:perspective(400) rotate3d(1,0,0,-90deg);
-webkit-transform-origin:50% 0;
-webkit-transition:350ms;
-moz-transition:350ms;
-o-transition:350ms;
transition:350ms;
}
.nav ul > li:hover ul {
max-height:1000px;
-webkit-transform:perspective(400) rotate3d(0,0,0,0);
}
* { margin: 0; padding: 0; }
body { font: 15px Helvetica, Sans-Serif; }
html { overflow-y: scroll; }
#page-wrap { width: 720px; margin: 25px auto; }
p { margin: 0 0 8px 0; }
a { text-decoration: none; }
img { vertical-align: middle; }
a img { border: 0; 180}
ul { list-style: none; }
h1 { margin: 0 0 10px 0; }
/*
LEVEL ONE
*/
ul.dropdown { position: relative; width: 100%; }
ul.dropdown li { font-weight: bold; float: left; width: 180px; background: #ccc; position: relative; }
ul.dropdown a:hover { color: #000; }
ul.dropdown li a { display: block; padding: 20px 8px; color: #222; position: relative; z-index: 2000; }
ul.dropdown li a:hover,
ul.dropdown li a.hover { background: #F3D673; position: relative; }
/*
LEVEL TWO
*/
ul.dropdown ul { display: none; position: absolute; top: 0; left: 0; width: 180px; z-index: 1000; }
ul.dropdown ul li { font-weight: normal; background: #f6f6f6; color: #000; border-bottom: 1px solid #ccc; }
ul.dropdown ul li a { display: block; background: #eee !important; }
ul.dropdown ul li a:hover { display: block; background: #F3D673 !important; }
.FixedHeightContainer
{
float:right;
height: 250px;
width:250px;
overflow: auto;
}
.Content
{
}
li.dropdown-menu-form {
padding: 5px 10px 0;
max-height: 100px;
overflow-y: scroll;
}
#dd-list {
padding-top: 5px;
padding-bottom: 5px;
padding-right: 20px;
padding-left: 10px;
font-weight: normal;
overflow-y: scroll;
}
Corrected CSS:
ul.dropdown-menu-form {
padding-left: 20px;
list-style-type: none;
max-height: 100px;
overflow-y: scroll;
}

Answer 1

JS FIDDLE
HTML
<nav>
<ul class="dropdown">
<li class="drop">Team Profile
<ul class="sub_menu">
<li>Chelsea</li>
<li>Man City</li>
<li>Southampton</li>
<li>Man Utd</li>
<li>Arsenal</li>
<li>Liverpool</li>
<li>West Ham</li>
<li>Newcastle</li>
<li>Leichester</li>
<li>QPR</li>
<li>Burnley</li>
<li>Aston Villa</li>
<li>Stoke City</li>
<li>Crystal Palace</li>
<li>Hull City</li>
<li>Sunderland</li>
<li>Tottenham Hotspur</li>
<li>Everton</li>
<li>Swansea</li>
<li>West Brom</li>
</ul>
</li>
</li>
</ul>
</nav>
CSS
body{
margin: 0px;
padding: 0px;
background: #000;
font-family: 'Lato', sans-serif;
}
h1{
margin: 2em 0px;
padding: 0px;
color: #fff;
text-align: center;
font-weight: 100;
font-size: 50px;
}
nav{
width: 750px;
margin: 1em auto;
}
ul{
margin: 0px;
padding: 0px;
list-style: none;
}
ul.dropdown{
position: relative;
width: 100%;
}
ul.dropdown li{
font-weight: bold;
float: left;
width: 180px;
position: relative;
background: #ecf0f1;
}
ul.dropdown a:hover{
color: #000;
}
ul.dropdown li a {
display: block;
padding: 20px 8px;
color: #34495e;
position: relative;
z-index: 2000;
text-align: center;
text-decoration: none;
font-weight: 300;
}
ul.dropdown li a:hover,
ul.dropdown li a.hover{
background: #3498db;
position: relative;
color: #fff;
}
ul.dropdown ul{
display: none;
position: absolute;
top: 0;
left: 0;
width: 180px;
z-index: 1000;
}
ul.dropdown ul li {
font-weight: normal;
background: #f6f6f6;
color: #000;
border-bottom: 1px solid #ccc;
}
ul.dropdown ul li a{
display: block;
color: #34495e !important;
background: #eee !important;
}
ul.dropdown ul li a:hover{
display: block;
background: #3498db !important;
color: #fff !important;
}
.drop > a{
position: relative;
}
.drop > a:after{
content:"";
position: absolute;
right: 10px;
top: 40%;
border-left: 5px solid transparent;
border-top: 5px solid #333;
border-right: 5px solid transparent;
z-index: 999;
}
.drop > a:hover:after{
content:"";
border-left: 5px solid transparent;
border-top: 5px solid #fff;
border-right: 5px solid transparent;
}
Javascript
/*
*
* Credits to http://css-tricks.com/long-dropdowns-solution/
*
*/
var maxHeight = 400;
$(function(){
$(".dropdown > li").hover(function() {
var $container = $(this),
$list = $container.find("ul"),
$anchor = $container.find("a"),
height = $list.height() * 1.1, // make sure there is enough room at the bottom
multiplier = height / maxHeight; // needs to move faster if list is taller
// need to save height here so it can revert on mouseout
$container.data("origHeight", $container.height());
// so it can retain it's rollover color all the while the dropdown is open
$anchor.addClass("hover");
// make sure dropdown appears directly below parent list item
$list
.show()
.css({
paddingTop: $container.data("origHeight")
});
// don't do any animation if list shorter than max
if (multiplier > 1) {
$container
.css({
height: maxHeight,
overflow: "hidden"
})
.mousemove(function(e) {
var offset = $container.offset();
var relativeY = ((e.pageY - offset.top) * multiplier) - ($container.data("origHeight") * multiplier);
if (relativeY > $container.data("origHeight")) {
$list.css("top", -relativeY + $container.data("origHeight"));
};
});
}
}, function() {
var $el = $(this);
// put things back to normal
$el
.height($(this).data("origHeight"))
.find("ul")
.css({ top: 0 })
.hide()
.end()
.find("a")
.removeClass("hover");
});
});
JS FIDDLE
Credits to: Larry Geams
Credits to: http://css-tricks.com/long-dropdowns-solution/