代码如下所示：
/* -------------------------------- */ </p>
<p>.menu li {
position: relative;
float: left;
cursor: pointer;
height: 120px;
width: 200px;
margin: 10px 0 0 10px;
color: #fff;
}
.menu li:hover, .menu li:focus {
background-image: -webkit-gradient(linear, left top, left bottom, from(rgba(255, 255, 255, .2)), to(rgba(255, 255, 255, 0)));
background-image: -webkit-linear-gradient(top, rgba(255, 255, 255, .2), rgba(255, 255, 255, 0));
background-image: -moz-linear-gradient(top, rgba(255, 255, 255, .2), rgba(255, 255, 255, 0));
background-image: -ms-linear-gradient(top, rgba(255, 255, 255, .2), rgba(255, 255, 255, 0));
background-image: -o-linear-gradient(top, rgba(255, 255, 255, .2), rgba(255, 255, 255, 0));
background-image: linear-gradient(top, rgba(255, 255, 255, .2), rgba(255, 255, 255, 0));
}
.menu .cover {
z-index: 2;
}
.menu .cover:focus {
outline: 0;
}</p>
<p>/* -------------------------------- */</p>
<p>.menu li::after {
content: counter(li);
counter-increment: li;
font: italic bold 10px serif, georgia;
position: absolute;
color: rgba(255, 255, 255, .1);
opacity: 0;
-webkit-transition: all .2s ease-out;
-moz-transition: all .2s ease-out;
-ms-transition: all .2s ease-out;
-o-transition: all .2s ease-out;
transition: all .2s ease-out;
}
.menu li:hover::after, .menu li:focus::after {
font-size: 100px;
opacity: 1;
}
.menu .cover::after {
z-index: -1;
}</p>
<p>/* -------------------------------- */ </p>
<p>.menu li:nth-child(1), .menu li:nth-child(2), .menu li:nth-child(3) {
margin-top: 0;
}
.menu li:nth-child(1), .menu li:nth-child(4), .menu li:nth-child(7) {
margin-left: 0;
}</p>
<p>/* -------------------------------- */ </p>
<p>.menu li:nth-child(1), .menu li:nth-child(1) .content, .menu li:nth-child(1) .close {
background-color: #2c618f;
}
.menu li:nth-child(2), .menu li:nth-child(2) .content, .menu li:nth-child(2) .close {
background-color: #91ab31;
}
.menu li:nth-child(3), .menu li:nth-child(3) .content, .menu li:nth-child(3) .close {
background-color: #714a28;
}
.menu li:nth-child(4), .menu li:nth-child(4) .content, .menu li:nth-child(4) .close {
background-color: #e58600;
}
.menu li:nth-child(5), .menu li:nth-child(5) .content, .menu li:nth-child(5) .close {
background-color: #c33a00;
}
.menu li:nth-child(6), .menu li:nth-child(6) .content, .menu li:nth-child(6) .close {
background-color: #7f5dac;
}
.menu li:nth-child(7), .menu li:nth-child(7) .content, .menu li:nth-child(7) .close {
background-color: #5672b7;
}
.menu li:nth-child(8), .menu li:nth-child(8) .content, .menu li:nth-child(8) .close {
background-color: #69003f;
}
.menu li:nth-child(9), .menu li:nth-child(9) .content, .menu li:nth-child(9) .close {
background-color: #393043;
}
/* -------------------------------- */</p>
<p>.menu .content {
opacity: 0;
display: none\9;
overflow: hidden;
font: 12px Arial, Helvetica;
position: absolute;
height: 120px;
width: 200px; /* Ideally: height: 100%; width: 100%; but works at it should just in FF */
-webkit-transition: all .3s ease-out;
-moz-transition: all .3s ease-out;
-ms-transition: all .3s ease-out;
-o-transition: all .3s ease-out;
transition: all .3s ease-out;
}
.menu .expanded {
opacity: .95;
display: block\9;
overflow: visible;
padding: 40px;
height: 300px;
width: 540px; /* Cover the entire area */
}
.menu li:nth-child(3n) .content { /* 3,6,9 */
right: 0;
}
.menu li:nth-child(3n-1) .expanded { /* 2,5,8 */
left: 50%;
margin-left: -310px;
}
.menu li:nth-child(7) .content, /* 7,8,9 */ .menu li:nth-child(8) .content, .menu li:nth-child(9) .content {
bottom: 0;
}
.menu li:nth-child(4) .expanded, /* 4,5,6 */ .menu li:nth-child(5) .expanded, .menu li:nth-child(6) .expanded {
margin-top: -190px;
top: 50%;
}
/* -------------------------------- */ </p>
<p>.menu .title {
position: absolute;
height: 100%;
width: 100%;
text-align: center;
font: italic bold 1em/120px 'trebuchet MS', Arial, helvetica;
opacity: .2;
}
.menu li:hover .title {
opacity: .7;
}
/* -------------------------------- */</p>
<p>.menu .close {
display: none;
border: 5px solid #fff;
color: #fff;
cursor: pointer;
height: 40px;
width: 40px;
font: bold 20px/40px arial, helvetica;
position: absolute;
text-align: center;
top: -20px;
right: -20px;
-moz-border-radius: 40px;
-webkit-border-radius: 40px;
border-radius: 40px;
}
.menu .cover .close {
display: block;
}
</style>
<script src="http://demo.jb51.net/jslib/jquery/jquery-1.7.1.min.js"></script>
<!--[if (gte IE 6)&(lte IE 8)]>
<script>
(function(win) {
if (/*@cc_on!@*/true) return;
var doc = document;
var root = doc.documentElement;
var xhr = getXHRObject();
var ieVersion = /MSIE (\d+)/.exec(navigator.userAgent)[1];
if (doc.compatMode != 'CSS1Compat' || ieVersion<6 || ieVersion>8 || !xhr) {
return;
}
var selectorEngines = {
"NW" : "*.Dom.select",
"MooTools" : "$$",
"DOMAssistant" : "*.$",
"Prototype" : "$$",
"YAHOO" : "*.util.Selector.query",
"Sizzle" : "*",
"jQuery" : "*",
"dojo" : "*.query"
};</p>
<p> var selectorMethod;
var enabledWatchers = []; // array of :enabled/:disabled elements to poll
var ie6PatchID = 0; // used to solve ie6's multiple class bug
var patchIE6MultipleClasses = true; // if true adds class bloat to ie6
var namespace = "slvzr";
// Stylesheet parsing regexp's
var RE_COMMENT = /(\/\*[^*]*\*+([^\/][^*]*\*+)*\/)\s*/g;
var RE_IMPORT = /@import\s*(?:(?:(?:url\(\s*(['"]?)(.*)\1)\s*\))|(?:(['"])(.*)\3))[^;]*;/g;
var RE_ASSET_URL