How do I customize dropdown menu in CSS? - css

Question

http://jsfiddle.net/zcfqu/
Been playing around with this piece of code for a while and am confused a bit.
How do I:
Change the color of the each submenu?
Make the submenu the same width as the main button?
HTML
<ul id="menu">
<li>This is the button
<ul class="submenu">
<li>Button one
</li>
<li>Button two
</li>
<li>Button three
</li>
</ul>
</li>
</ul>

Answer 1

Remove all floats and position:absolute
Check this demo
I just removed all floats (which was causing funny jumping of li and really not needed) and position:absolute (which was causing menu to shift sideways)
Also, I didn't read through all your CSS to find which background property is overriding which one, but I just removed them all and added new ones at bottom.
#menu > li { background-color: red; }
#menu > li:hover { background-color: green; }
.submenu li { background-color: blue; }
.submenu li:hover { background-color: yellow; }
EDIT 1
Its a good idea to use CSS shorthands and reduce CSS size and also make it more readable. Also, remove all incorrect CSS and you can also write border-radius: 2px 2px 2px 2px as border-radius: 2px (and save 12 bytes :O)
EDIT 2
CSS shorthands - MDN
font shorthand - W3C
background shorthand - W3C (scroll to the very bottomo of the page)

Answer 2

Change the color of the each submenu
ul.submenu a:hover {
background-color: red !important;
}
This changes on hover. If you want it always the same color remove :hover
Make the submenu the same width as the main button
ul.submenu, ul.submenu>li {
width: 100%;
}
This way you don't need to apply a fixed width. The browser will calculate it using parents adapted width.
Demo

Answer 3

Here is the correct approach in tackling your issues
DEMO http://jsfiddle.net/kevinPHPkevin/zcfqu/37/
// be more specific when targeting
ul#menu ul.submenu li a:hover {
background-color: green;
}
// set width to match button size
ul.submenu, ul.submenu>li {
width: 100%;
}
// assign classes for different coloured buttons. You could do this with css3 and `nth child` but it would limit your browser support considerably.
ul#menu .submenu li.btn1 a {
background: red;
}
ul#menu .submenu li.btn2 a {
background: yellow;
}
ul#menu .submenu li.btn3 a {
background: blue;
}

Answer 4

Take a look to this, I changed the background, and the "hover" and the width. It is correct ? Fiddle
ul#menu, ul#menu ul.sub-menu and ul#menu, ul.submenu --> width: 200px;
ul#menu li a for the background

Answer 5

I've set each li as 150px width. This has fixed the issue.
http://jsfiddle.net/andaywells/zcfqu/34/
ul#menu ul.submenu li {width: 150px;}

Answer 6

You can try the css as below with no changes on the html elements. I have added some comments for your references. Only 3 changes made on the css.
/*Initialize*/
ul#menu, ul#menu ul.sub-menu {
font-family: Helvetica;
background-color: #57AD68;
color: #FFFFFF;
border-radius: 3px 3px 3px 3px;
font-size: 12px;
font-style: normal;
font-weight: 400;
height: 40px;
line-height: 39px;
padding: 0 20px;
position: relative;
text-align: center;
vertical-align: bottom;
border-radius: 3px 3px 3px 3px;
border-style: none none solid;
border-width: 0 0 1px;
cursor: pointer;
display: inline-block;
float: center;
list-style-type: none;
text-decoration: none;
}
ul#menu, ul.submenu{
margin: 0;
padding: 0;
list-style: none;
float: left;
width: 134px; /*Adjust the sub menu width*/
}
ul#menu li{
float: left;
}
/* hide the submenu */
li ul.submenu {
display: none;
}
/* Main Button */
ul#menu li a{
display: block;
text-decoration: none;
color: #ffffff;
padding: 0 20px;
background: ; /*Remove the color here to avoid overlapped*/
float:right;
border-radius: 2px 2px 2px 2px;
font-family: Helvetica;
}
ul.submenu a:hover {
background: red;
}
/* show the submenu */
ul#menu li:hover ul.submenu{
display: block;
position: absolute;
float:right;
background-color:green; /*Adjust the color of sub menu.*/
}
ul#menu li:hover li, ul#menu li:hover a {
float: none;
background: ;
}
ul#menu li:hover li a:hover {
opacity:0.9;
}