How can I make my css :hover work?_问答_开发者

Bellow is my css i'm using. The div with the largebutton class on it works with the exception of the hover. I would like it to change it's background color, but am not sure why its not working. Any ideas?

edit - I'm working in FF at the moment. I'm not looking for support in IE6, possibly not IE7 either.

.top .bottombar .largebutton
{
    position: relative;
    float: left;
    height: 100%;
    width: 195px;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform:uppercase;
    line-height: 33px;
    text-align: right;
    background-color: #99CCFF;
    margin-left: 5px;
    padding-right: 5px;
    overflow: hidden;
    cursor: pointer;
}

.top .bottombar .largebutton:hover
{
    background-color: #9999FF;
}

edit - Full files

HTML

<html>
    <head>
        <link rel="StyleSheet" href="css/LCARS.css" type="text/css" media="screen">
    </head>
    <body>
        <div class="top">
            <div class="content">
            </div>
            <div class="leftbuttonbox">
                <div class="button">
                Label
                </div>
                <div class="largebutton">
                Label
                </div>
                <div class="button">
                Label
                </div>
            </div>
            <div class="bottombar">
                <div class="button">
                Label
                </div>
                <div class="largebutton">
                Label
                </div>
                <div class="button">
                Label
                </div>开发者_如何学Python
                <div class="label">
                    This is a label, it grows as large as it needs to
                </div>
            </div>
            <div class="cap">
                <div class="capinner">
                </div>
            </div>
        </div>
    </body>
</html>

CSS

@font-face {
    font-family: "LCARS";
    src: url('../FONT/lcars.ttf');
}

body
{
    font-family: "LCARS";
    position: relative;
    background-color: black;
    padding: 0px;
    margin: 0px;
}

.top
{
    position: relative;
    height: 220px;
    min-width: 100px;
    margin-top: 5px;
    margin-left: 5px;
    margin-right: 5px;
    background-color: #6666FF;
    -moz-border-radius-bottomleft: 50px;
}

.top .content
{
    position: absolute;
    top: 0px;
    right: 0px;
    left: 100px;
    bottom: 25px;
    background-color: black;
    -moz-border-radius-bottomleft: 25px;
}

.top .leftbuttonbox
{
    position: absolute;
    top: 0px;
    left: 0px;
    width: 100px;
    bottom: 60px;
    background-color: black;
    overflow: hidden;
}

/*
 * the button is 1/2 the size of the large button
 * the button box can hold 4 buttons or 2 large
 * buttons or any combination of equal size
 */
.top .leftbuttonbox .button
{
    position: relative;
    height: 35px;
    width: 95px;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform:uppercase;
    line-height: 53px;
    text-align: right;
    background-color: #99CCFF;
    margin-bottom: 5px;
    padding-right: 5px;
    overflow: hidden;
    cursor: pointer;
}

.top .leftbuttonbox .button:hover
{
    background-color: #9999FF;
}

.top .leftbuttonbox .largebutton
{
    position: relative;
    height: 75px;
    width: 95px;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform:uppercase;
    line-height: 133px;
    text-align: right;
    background-color: #99CCFF;
    margin-bottom: 5px;
    padding-right: 5px;
    overflow: hidden;
    cursor: pointer;
}

.top .leftbuttonbox .largebutton:hover
{
    background-color: #9999FF;
}

.top .bottombar
{
    position: absolute;
    bottom: 0px;
    height: 25px;
    left: 200px;
    padding-right: 5px;
    background-color: black;
    overflow: hidden;
}

.top .bottombar .button
{
    position: relative;
    float: left;
    height: 100%;
    width: 95px;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform:uppercase;
    line-height: 33px;
    text-align: right;
    background-color: #99CCFF;
    margin-left: 5px;
    padding-right: 5px;
    overflow: hidden;
    cursor: pointer;
}

.top .bottombar .button:hover
{
    background-color: #9999FF;
}

.top .bottombar .largebutton
{
    position: relative;
    float: left;
    height: 100%;
    width: 195px;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform:uppercase;
    line-height: 33px;
    text-align: right;
    background-color: #99CCFF;
    margin-left: 5px;
    padding-right: 5px;
    overflow: hidden;
    cursor: pointer;
}

.top:hover .bottombar:hover .largebutton:hover
{
    background-color: #9999FF;
}

.top .bottombar .label
{
    position: relative;
    float: left;
    height: 100%;
    min-width: 50px;
    font-size: 22px;
    letter-spacing: 1px;
    font-variant: small-caps;
    padding-left: 5px;
    padding-right: 5px;
    background-color: #CC99CC;
    margin-left: 5px;
    cursor: default;
}

.top .cap
{
    position: absolute;
    height: 25px;
    width: 20px;
    right: 0px;
    bottom: 0px;
    padding-left: 5px;
    padding-right: 5px;
    background-color: black;
    cursor: default;
}

.top .cap .capinner
{
    position: relative;
    height: 100%;
    width: 100%;
    background-color: #6666FF;
    cursor: default;
    -moz-border-radius-topright: 50%;
    -moz-border-radius-bottomright: 50%;
}

div.top div.bottombar div.largebutton:hover
{
    background-color: #9999FF;
}

I think it's a bug in Firefox. Sometimes, when you add CSS for nested classes without specifying what elements these are applied to, the browser goes crazy. Your code works OK in other browsers, so technically it's not your fault, but FF's ;)

I suggest this solution:

.top .largebutton:hover
{
    background-color: #9999FF; /* make this whatever color it was before */
}

This worked for me when I tried it with your full code. Hope it works for you :)

Amit

The key concept of styling a link stands toward following steps:

You have to declare styles of 4 different condition which are a:link , a:visited , a:hover , a:active .
You have to be careful about the order. Because it matters. link > visited > hover > active. (especially to have :hover and :visited work...)
Eventhough you don't need styling one or more of conditions, nevertheless, style them all.

If you pay attention to these, you may have perfectly styled links.

I hope it helps.