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Pure CSS3 LavaLamp Menu

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I think that you have already seen animated menus with the LavaLamp effect (based on the jQuery plugin). Today I would like to tell you how to repeat same behavior, only with CSS3 (without any JavaScript). I will use CSS3 transitions in our menu (to animate elements). So, if you are ready, let's start.


Here are the samples and downloadable package:

Live Demo

download in package


Ok, download the sources and let's start coding !


Step 1. HTML

As usual, we start with the HTML. Here is the html code of our menu. As usual – this is a UL-LI based navigation menu. The most interesting thing will be the CSS styles, of course.

index.html

<ul id="nav">
    <li><a href="http://www.script-tutorials.com/">Home</a></li>
    <li><a class="hsubs" href="#">Menu 1</a>
        <ul class="subs">
            <li><a href="#">Submenu 1</a></li>
            <li><a href="#">Submenu 2</a></li>
            <li><a href="#">Submenu 3</a></li>
            <li><a href="#">Submenu 4</a></li>
            <li><a href="#">Submenu 5</a></li>
        </ul>
    </li>
    <li><a class="hsubs" href="#">Menu 2</a>
        <ul class="subs">
            <li><a href="#">Submenu 2-1</a></li>
            <li><a href="#">Submenu 2-2</a></li>
            <li><a href="#">Submenu 2-3</a></li>
            <li><a href="#">Submenu 2-4</a></li>
            <li><a href="#">Submenu 2-5</a></li>
            <li><a href="#">Submenu 2-6</a></li>
            <li><a href="#">Submenu 2-7</a></li>
            <li><a href="#">Submenu 2-8</a></li>
        </ul>
    </li>
    <li><a class="hsubs" href="#">Menu 3</a>
        <ul class="subs">
            <li><a href="#">Submenu 3-1</a></li>
            <li><a href="#">Submenu 3-2</a></li>
            <li><a href="#">Submenu 3-3</a></li>
            <li><a href="#">Submenu 3-4</a></li>
            <li><a href="#">Submenu 3-5</a></li>
        </ul>
    </li>
    <li><a href="#">Menu 4</a></li>
    <li><a href="#">Menu 5</a></li>
    <li><a href="#">Menu 6</a></li>
    <li><a href="http://www.script-tutorials.com/pure-css3-lavalamp-menu/">Back</a></li>
    <div id="lavalamp"></div>
</ul>

Step 2. CSS

Here are the CSS styles of our LavaLamp menu.

css/menu.css

#nav,#nav ul {
    list-style: none outside none;
    margin: 0;
    padding: 0;
}
#nav {
    background: url('menu_bg.png') no-repeat scroll 0 0 transparent;
    clear: both;
    font-size: 12px;
    height: 58px;
    padding: 0 0 0 9px;
    position: relative;
    width: 957px;
}
#nav ul {
    background-color: #222;
    border:1px solid #222;
    border-radius: 0 5px 5px 5px;
    border-width: 0 1px 1px;
    box-shadow: 0 5px 5px rgba(0, 0, 0, 0.5);
    left: -9999px;
    overflow: hidden;
    position: absolute;
    top: -9999px;
    z-index: 2;

    -moz-transform: scaleY(0);
    -ms-transform: scaleY(0);
    -o-transform: scaleY(0);
    -webkit-transform: scaleY(0);
    transform: scaleY(0);

    -moz-transform-origin: 0 0;
    -ms-transform-origin: 0 0;
    -o-transform-origin: 0 0;
    -webkit-transform-origin: 0 0;
    transform-origin: 0 0;

    -moz-transition: -moz-transform 0.1s linear;
    -ms-transition: -ms-transform 0.1s linear;
    -o-transition: -o-transform 0.1s linear;
    -webkit-transition: -webkit-transform 0.1s linear;
    transition: transform 0.1s linear;
}
#nav li {
    background: url('menu_line.png') no-repeat scroll right 5px transparent;
    float: left;
    position: relative;
}
#nav li a {
    color: #FFFFFF;
    display: block;
    float: left;
    font-weight: normal;
    height: 30px;
    padding: 23px 20px 0;
    position: relative;
    text-decoration: none;
    text-shadow: 1px 1px 1px #000000;
}
#nav li:hover > a {
    color: #00B4FF;
}
#nav li:hover, #nav a:focus, #nav a:hover, #nav a:active {
    background: none repeat scroll 0 0 #121212;
    outline: 0 none;
}
#nav li:hover ul.subs {
    left: 0;
    top: 53px;
    width: 180px;

    -moz-transform: scaleY(1);
    -ms-transform: scaleY(1);
    -o-transform: scaleY(1);
    -webkit-transform: scaleY(1);
    transform: scaleY(1);
}
#nav ul li {
    background: none;
    width: 100%;
}
#nav ul li a {
    float: none;
}
#nav ul li:hover > a {
    background-color: #121212;
    color: #00B4FF;
}
#lavalamp {
    background: url('lavalamp.png') no-repeat scroll 0 0 transparent;
    height: 16px;
    left: 13px;
    position: absolute;
    top: 0px;
    width: 64px;

    -moz-transition: all 300ms ease;
    -ms-transition: all 300ms ease;
    -o-transition: all 300ms ease;
    -webkit-transition: all 300ms ease;
    transition: all 300ms ease;
}
#lavalamp:hover {
    -moz-transition-duration: 3000s;
    -ms-transition-duration: 3000s;
    -o-transition-duration: 3000s;
    -webkit-transition-duration: 3000s;
    transition-duration: 3000s;
}
#nav li:nth-child(1):hover ~ #lavalamp {
    left: 13px;
}
#nav li:nth-child(2):hover ~ #lavalamp {
    left: 90px;
}
#nav li:nth-child(3):hover ~ #lavalamp {
    left: 170px;
}
#nav li:nth-child(4):hover ~ #lavalamp {
    left: 250px;
}
#nav li:nth-child(5):hover ~ #lavalamp {
    left: 330px;
}
#nav li:nth-child(6):hover ~ #lavalamp {
    left: 410px;
}
#nav li:nth-child(7):hover ~ #lavalamp {
    left: 490px;
}
#nav li:nth-child(8):hover ~ #lavalamp {
    left: 565px;
}

Live Demo

download in package


Conclusion

Hope you enjoyed with our new CSS3 menu. Don’t forget to offer thanks and leave a comment :) Good luck!

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Published at DZone with permission of Andrey Prikaznov, DZone MVB. See the original article here.

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