CSS3 Menu Layout and Gradient not showing - html

Question

I have been given the task to recreate the following menu:
I am just not sure how to create the gradient. Done
Why cannot I see it in my code? http://jsfiddle.net/Vtr6d/
Currently I have:
CSS:
.mainOptions{
float:left;
margin:0 20px 0 20px;
color:#fff;
width:500px;
height:50px;
background:gray;
}
.mainOptions .composer{
width:50px;
height:40px;
background:-webkit-gradient(linear, 0 0, 0 100%, from(#184C82), to(#022243));
}
.mainOptions .composerIcon{
display:inline-block;
width:14px;
height:14px;
background:url('../images/composer.png') no-repeat -96px -72px;
}
.mainOptions ul li{
display:inline-block;
padding:4px 10px 4px;
border-radius:4px;
}
.mainOptions li a{
text-decoration:none;
font-size:13px;
line-height:18px;
text-align:center;
vertical-align:middle;
}
.mainOptions li{
width:140px;
background-color:pink;
}
HTML:
<nav class="mainOptions">
<ul>
<li class="composerIcon composer">Composer</li>
<li>Address Books</li>
<li class="active">Scheduled Messages</li>
<li>Templates</li>
</ul>
</nav>

Answer 1

Try this working in all browser.
background: #184c82; /* Old browsers */
background: -moz-linear-gradient(top, #184c82 0%, #022243 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#184c82), color-stop(100%,#022243)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, #184c82 0%,#022243 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, #184c82 0%,#022243 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, #184c82 0%,#022243 100%); /* IE10+ */
background: linear-gradient(top, #184c82 0%,#022243 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#184c82', endColorstr='#022243',GradientType=0 ); /* IE6-9 */

Answer 2

background-image: -webkit-linear-gradient(linear,0%,0%,0%,100%,from(#3388FF),to(#296DCC));
background-image: -webkit-linear-gradient(top,#3388FF,#296DCC);
background-image: -ms-linear-gradient(top,#3388FF,#296DCC);
background-image: -o-linear-gradient(top,#3388FF,#296DCC);
background-image: -moz-linear-gradient(top,#3388FF,#296DCC);
background-image: linear-gradient(top,#3388FF,#296DCC);
for browser compatibility issues use all of them

Answer 3

Use a gradient generator? http://gradients.glrzad.com/
You can also do it manually:
background-image: linear-gradient(bottom, <color1> 5%, <color2> 53%, <color3> 77%);
background-image: -o-linear-gradient(bottom, <color1> 5%, <color2> 53%, <color3> 77%);
background-image: -moz-linear-gradient(bottom, <color1> 5%, <color2> 53%, <color3> 77%);
background-image: -webkit-linear-gradient(bottom, <color1> 5%, <color2> 53%, <color3> 77%);
background-image: -ms-linear-gradient(bottom, <color1> 5%, <color2> 53%, <color3> 77%);
background-image: -webkit-gradient(
linear,
left bottom,
left top,
color-stop(0.05, <color1>),
color-stop(0.53, <color2>),
color-stop(0.77, <color3>)
);
With <color1>, <color2> and <color3> three rgb(x,y,z) colors. You can also edit the percentages to suit your needs.