CSS3 animations

I have the following code, which acts like a turntable and plays Sgt. Pepper when you load the page. This works only in Safari (I suppose I can delete the FF parts then), so I'm wondering how I can make the code better. The reason for there being a first, last, and main class on most div's is because records start out slower, then slow down once they're finished, and this was the only way I could accomplish it (that I knew).

HTML:

    <div class="noise"></div>
    <div class="container">
        <div class="cover"></div>
        <div class="content">
            <div class="switch">
                <div class="toggle"></div>
            </div>
            <div class="arm_container">
                <div class="pivot"></div>
                <div class="front_arm">
                    <div class="tip"></div>
                    <div class="thick"></div>
                </div>
                <div class="back_arm"></div>
            </div>
            <div class="rest"></div>
            <div class="center">
                <div class="small"></div>
            </div>
            <div class="first top_vinyl vinyl">
                <div class="last top_vinyl vinyl">
                    <div class="main top_vinyl vinyl"></div>
                </div>
            </div>
            <div class="first bottom_vinyl vinyl">
                <div class="last bottom_vinyl vinyl">
                    <div class="main bottom_vinyl vinyl"></div>
                </div>
            </div>
            <div class="ring_container">
                <div class="first ring">
                    <div class="last ring">
                        <div class="main ring"></div>
                    </div>
                </div>
            </div>
            <div class="inside_container">
                <div class="first inside">
                    <label>Sgt. Pepper</label><br /><span>Sgt. Pepper's Lonely Hearts Club Band<br />Lucy in the Sky with Diamonds<br />When I'm Sixty- Four<br />A Day in the Life</span>
                    <div class="last inside">
                        <label>Sgt. Pepper</label><br /><span>Sgt. Pepper's Lonely Hearts Club Band<br />Lucy in the Sky with Diamonds<br />When I'm Sixty- Four<br />A Day in the Life</span>
                        <div class="main inside">
                            <label>Sgt. Pepper</label><br /><span>Sgt. Pepper's Lonely Hearts Club Band<br />Lucy in the Sky with Diamonds<br />When I'm Sixty- Four<br />A Day in the Life</span>
                        </div>
                    </div>
                </div>
            </div>
            <audio class="audio" controls="" onloadeddata="var audioPlayer = this; setTimeout(function() { audioPlayer.play(); }, 11500)">>
                <source src="song.mp3" type="audio/mp3" />
            </audio>
        </div>
    </div>

CSS:

*{
    -webkit-text-size-adjust: none;
    -moz-text-size-adjust: none;
    line-height: normal;
    margin:0;
    padding:0;
}

body{
    background-color:#222;
}

div{
    -webkit-backface-visibility:hidden;
    -moz-backface-visibility: hidden;
    position: absolute;
}

.audio{
    display: none;
}

/* Animations */

@-webkit-keyframes  arm {
    0% { 
    -webkit-transform: rotate(0deg); 
    }
    2% { 
    -webkit-transform: rotate(18deg); 
    }
    99% { 
    -webkit-transform: rotate(38deg); 
    }
    100% { 
    -webkit-transform: rotate(0deg);
    }   
}

@-moz-keyframes arm {
    0% { 
    -moz-transform: rotate(0deg);
    }
    2% { 
    -moz-transform: rotate(18deg);
    }
    99% { 
    -moz-transform: rotate(38deg);
    }
    100% { 
    -moz-transform: rotate(0deg);
    }   
}

@-webkit-keyframes spin {
    0% { 
    -webkit-transform: rotate(0deg);
    }
    100% { 
    -webkit-transform: rotate(360deg); 
    }
}

@-moz-keyframes spin {
    0% { 
    -moz-transform: rotate(0deg);
    }
    100% { 
    -moz-transform: rotate(360deg); 
    }
}

@-webkit-keyframes toggle {
    0% { 
    -webkit-transform: translateX(0); 
    }
    1% { 
    -webkit-transform: translateX(-10px); 
    background-color:red;
    }
    1.1% {
    background-color:#1EEC04; 
    }
    99%{ 
    -webkit-transform: translateX(-10px);
    }
    100% {
    background-color:#1EEC04;
    }
}

@-moz-keyframes toggle {
    0% { 
    -moz-transform: translateX(0); 
    }
    1% { 
    -moz-transform: translateX(-10px); 
    background-color:red;
    }
    1.1% {
    background-color:#1EEC04; 
    }
    99%{ 
    -moz-transform: translateX(-10px);
    }
    100% {
    background-color:#1EEC04;
    }
}

/* Container */

.content{
    width:258px;
    height:200px;
    margin:20px;
}

.cover{
    width:298px;
    height:238px;   
    z-index: 1000;
    background: -webkit-linear-gradient(
        top, 
        rgba(125,126,125,.2) 0%,
        rgba(14,14,14,.2) 100%
    ); 
    background: -moz-linear-gradient(
        top, 
        rgba(125,126,125,.2) 0%,
        rgba(14,14,14,.2) 100%
    ); 
    opacity: 1;
    border:1px solid #181818;
    box-shadow: 0 5px 0 rgba(0,0,0,.3), 0 0 100px #333;
}

.container{
    width:298px;
    height:238px;
    left:50%;
    margin-left:-149px;
    top:50%;
    margin-top:-119px;
}

.noise{
    top:0;
    bottom:0;
    right:0;
    left:0;
    background-image:url(noise.png);
    z-index: 10000;
}

/* Switch */

.switch{
    width:20px;
    height:10px;
    border-radius: 5px;
    background-color:#333;
    margin-top:180px;
    margin-left:190px;
    box-shadow:inset 0 0 2px #666;
}

.toggle{
    width:10px;
    height:10px;
    border-radius: 5px;
    background-color:red;
    margin-left:10px;
    -webkit-animation-name: toggle; 
    -webkit-animation-duration:123s;
    -webkit-animation-delay:9s;
    -webkit-animation-iteration-count:1;
    -moz-animation-name: toggle; 
    -moz-animation-duration:123s;
    -moz-animation-delay:9s;
    -moz-animation-iteration-count:1;
    box-shadow: inset 0 0 2px #000;
}

/* Arm  */

.arm_container{
    width:50px;
    height:93px;
    z-index: 2;
    margin-left:185px;
    margin-top:40px;
    -webkit-animation-name: arm; 
    -webkit-animation-duration:125s;
    -webkit-animation-iteration-count:1;
    -webkit-animation-delay:10s;
    -webkit-animation-timing-function: ease-out;
    -moz-animation-name: arm; 
    -moz-animation-duration:125s;
    -moz-animation-iteration-count:1;
    -moz-animation-delay:10s;
    -moz-animation-timing-function: ease-out;
}

.front_arm{
    width:4px;
    height:50px;
    background-color:#999;
    margin-left:37px;
    margin-top:47px;
    z-index: 2;
    -webkit-transform: rotate(27deg);
    -moz-transform: rotate(27deg);
}

.back_arm{
    width:4px;
    height:50px;
    background-color:#999;
    margin-left:48px;
    z-index: 2;
}

.thick{
    background-color:#ccc;
    width:6px;
    height:10px;
    margin-top:34px;
    margin-left:-1px;
}

.tip{
    border-left:2.5px solid transparent;
    border-right:2.5px solid transparent;
    border-top:7px solid #999;
    width:0px;
    height:0px;
    margin-top:49px;
    margin-left:0px;
}

.pivot{
    background-color:#999;
    width:10px;
    height:10px;
    border-radius: 10px;
    margin-left:45px;
    margin-top:-3px;
    z-index: 2;
    box-shadow: 0 0 0 6px #111;
}

.rest{
    width:8px;
    height:10px;
    background-color:#fff;
    -webkit-transform: rotate(30deg);
    -moz-transform: rotate(30deg);
    margin-left:223px;
    margin-top:101px;
    border-radius: 1px;
}

/* Center */

.center{
    width:7px;
    height: 7px;
    background-color:#ccc;
    border-radius: 10px;
    z-index: 4;
    margin-top:95px;
    margin-left:96px;
}


.small{
    width:5px;
    height: 5px;
    background-color:#222;
    border-radius: 2px;
    z-index: 5;
    margin-top:1px;
    margin-left:1px;
}

/* Vinyl */

.first
{
    -webkit-animation-name: spin; 
    -webkit-animation-duration:3s;
    -webkit-animation-iteration-count:1;
    -webkit-animation-timing-function: ease-in;
    -webkit-animation-delay:10s;
    -moz-animation-name: spin; 
    -moz-animation-duration:3s;
    -moz-animation-iteration-count:1;
    -moz-animation-timing-function: ease-in;
    -moz-animation-delay:10s;
}
.last
{
    -webkit-animation-name: spin; 
    -webkit-animation-duration:10s;
    -webkit-animation-iteration-count:1;
    -webkit-animation-delay:134s;
    -webkit-animation-timing-function: ease-out;
    -moz-animation-name: spin; 
    -moz-animation-duration:10s;
    -moz-animation-iteration-count:1;
    -moz-animation-delay:134s;
    -moz-animation-timing-function: ease-out;
}
.main
{
    -webkit-animation-name: spin; 
    -webkit-animation-duration:1.1s;
    -webkit-animation-delay:13s;
    -webkit-animation-iteration-count:110;
    -webkit-animation-timing-function:linear;
    -moz-animation-name: spin; 
    -moz-animation-duration:1.1s;
    -moz-animation-delay:13s;
    -moz-animation-iteration-count:110;
    -moz-animation-timing-function:linear;
}

.vinyl {
    border-radius: 50%;
    width: 200px;
    height: 200px;
    box-shadow: 0 0 1px #000;
}

.top_vinyl {
    background:-webkit-linear-gradient(
        left, 
        #111111 50%, 
        #1c1c1c 50%
    );
    background:-moz-linear-gradient(
        left, 
        #111111 50%, 
        #1c1c1c 50%
    );
}

.bottom_vinyl {
     background:-webkit-radial-gradient(
         center, 
         ellipse cover, 
         #000000 0%, 
         #333333 20%,
         #000000 20%,
         #333333 40%,
         #000000 40%,
         #333333 55%,
         #000000 55%,
         #333333 70%,
         #000000 70%,
         #333333 100%
     );
     background:-moz-radial-gradient(
         center, 
         ellipse cover, 
         #000000 0%, 
         #333333 20%,
         #000000 20%,
         #333333 40%,
         #000000 40%,
         #333333 55%,
         #000000 55%,
         #333333 70%,
         #000000 70%,
         #333333 100%
     );
     opacity: .3;
}

/* Rainbow ring */

.ring_container{
    margin-top:69px;
    margin-left:70px;
}

.ring{
    height:61px;
    background-image:url(ring.png);
    width: 60px;
    background-position: center center;
    background-repeat: no-repeat;
    border-radius:30px;
}

/* Inside ring */

.inside_container{
    margin-top:115px;
    margin-left:75px;
}

.inside{
    width:50px;
    height:50px;
    background-color:#333;
    border-radius: 25px;
    font-size: 5px;
    color:#fff;
    font-family: sans-serif;
    text-align: center;
    margin-top:-40px;
}

.inside span{
    font-size: 2px;
    display: block;
    text-align: left;
    margin-top:10px;
    margin-left:8px;
}

.inside label{
    margin-top:10px;
    display: block;
}