CSS3 Desktop > Tablet > Smartphone Animation - Snippet

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HTML
CSS
JS

<div class="frame">
	<div class="mic"></div>
	<div class="screen"></div>
	<div class="home"></div>
</div>
<div class="stand"></div>
<div class="foot"></div>

* {
    margin: 0;
    padding: 0;
    font-size: 100%;
    vertical-align: baseline;
    border: 0;
    outline: 0;
    background: transparent;
    font-weight: normal; 
    outline: none;
    line-height: 2em;
    -webkit-text-size-adjust: 100%;
}

html,body{
	with:100%;
	height:100%;
}

html{
	box-shadow:inset 0 0 100px #999;
	height:700px;
}

header, section, footer, aside, nav, article, figure {
    display: block;
    overflow: hidden;
}
body {
    background: #fff;
    margin: 50px;
}
.frame {
    height: 140px;
    width: 75px;
    margin: auto;
    border: 2px solid #000;
    /*border-radius*/
    -webkit-border-radius: 10px;
    -moz-border-radius: 10px;
    border-radius: 10px;
    background: #000;
    /*animation*/
    -webkit-animation: frame 3s .9s ease backwards;
    -moz-animation: frame 3s .9s ease backwards;
    -ms-animation: frame 3s .9s ease backwards;
    -o-animation: frame 3s .9s ease backwards;
    animation: frame 3s .9s ease backwards;
}
.mic {
    background: #fff;
    height: 3px;
    width: 20px;
    margin: 10px auto;
    /*border-radius*/
    -webkit-border-radius: 2px;
    -moz-border-radius: 2px;
    border-radius: 2px;
    /*animation*/
    -webkit-animation: mic 3s .5s ease-out backwards;
    -moz-animation: mic 3s .5s ease-out backwards;
    -ms-animation: mic 3s .5s ease-out backwards;
    -o-animation: mic 3s .5s ease-out backwards;
    animation: mic 3s .5s ease-out backwards;
}
.screen {
    background: #fff;
    width: 69px;
    margin: auto;
    height: 90px;
    /*animation*/
    -webkit-animation: screen 3s .5s ease backwards;
    -moz-animation: screen 3s .5s ease backwards;
    -ms-animation: screen 3s .5s ease backwards;
    -o-animation: screen 3s .5s ease backwards;
    animation: screen 3s .5s ease backwards;
}
.home {
    background: #fff;
    width: 12px;
    margin: auto;
    height: 12px;
    /*border-radius*/
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    margin: 8px auto;
    /*animation*/
    -webkit-animation: home 3s .5s ease backwards;
    -moz-animation: home 3s .5s ease backwards;
    -ms-animation: home 3s .5s ease backwards;
    -o-animation: home 3s .5s ease backwards;
    animation: home 3s .5s ease backwards;
}
.stand {
    background: #000;
    height: 0;
    width: 0;
    margin: 0;
    /*animation*/
    -webkit-animation: stand 3s .9s ease backwards;
    -moz-animation: stand 3s .9s ease backwards;
    -ms-animation: stand 3s .9s ease backwards;
    -o-animation: stand 3s .9s ease backwards;
    animation: stand 3s .9s ease backwards;
}
.foot {
    background: #000;
    height: 0;
    width: 0;
    margin: 0;
    /*animation*/
    -webkit-animation: foot 3s .9s ease backwards;
    -moz-animation: foot 3s .9s ease backwards;
    -ms-animation: foot 3s .9s ease backwards;
    -o-animation: foot 3s .9s ease backwards;
    animation: foot 3s .9s ease backwards;
}
@-webkit-keyframes frame { 
    0% {
        height: 350px;
        width: 500px;
    }
    20% {
        height: 350px;
        width: 500px;
    }
    50% {
        height: 230px;
        width: 185px;
    }
    70% {
        height: 230px;
        width: 185px;
    }
    100% { }
}
@-webkit-keyframes mic { 
    0% {
        height: 0;
        width: 0;
        margin: 0;
    }
    20% {
        height: 0;
        width: 0;
        margin: 0;
    }
    50% {
        height: 0;
        width: 0;
        margin: 0;
    }
    70% {
        height: 0;
        width: 0;
        margin: 0;
    }
    100% { }
}
@-webkit-keyframes screen { 
    0% {
        width: 460px;
        margin: 20px auto 0 auto;
        height: 310px;
    }
    20% {
        width: 460px;
        margin: 20px auto 0 auto;
        height: 310px;
    }
    50% {
        width: 150px;
        margin: 20px auto 0 auto;
        height: 180px;
    }
    70% {
        width: 150px;
        margin: 20px auto 0 auto;
        height: 180px;
    }
    100% { }
}
@-webkit-keyframes home { 
    0% {
        height: 0;
        width: 0;
        margin: 0;
    }
    20% {
        height: 0;
        width: 0;
        margin: 0;
    }
    50% {
        width: 12px;
        margin: auto;
        height: 12px;
        border-radius: 50%;
        margin: 9px auto;
    }
    70% {
        width: 12px;
        margin: auto;
        height: 12px;
        border-radius: 50%;
        margin: 9px auto;
    }
    100% { }
}
@-webkit-keyframes stand { 
    0% {
        background: #000;
        width: 100px;
        height: 30px;
        margin: 3px auto 0 auto;
    }
    20% {
        background: #000;
        width: 100px;
        height: 30px;
        margin: 3px auto 0 auto;
    }
    50% {
        margin: 1px auto 0 auto;
        height: 0;
        width: 0;
    }
    70% { margin: auto }
    100% { margin: auto }
}
@-webkit-keyframes foot { 
    0% {
        width: 200px;
        height: 10px;
        margin: auto;
        background: #000;
    }
    20% {
        width: 200px;
        height: 10px;
        margin: auto;
        background: #000;
    }
    50% {
        margin: 1px auto 0 auto;
        height: 0;
        width: 0;
    }
    70% { }
    100% { }
}