Tạo hiệu ứng animation cực độc của googledoodle chỉ với CSS3 Non-Javascrip - Google Doodle animation in CSS3 without Javascript

DEMO: 

MÃ HTML


<div id="logo">
    <div class="frame">
        <img src="https://www.google.com/logos/2012/muybridge12-hp-v.png" />
    </div>
  
    <!-- The play button now -->
    <label for="play_button" id="play_label"></label>    <input type="checkbox" id="play_button" name="play_button" />
   
    <!-- The image for the play button
    The sibling selector works in the forward direction only.-->
    <span id="play_image">
        <img src="http://www.google.co.in/logos/2012/muybridge12-hp-p.jpg" />
    </span>
   
    <div class="horse"></div>
    <div class="horse"></div>
    <div class="horse"></div>
</div>

MÃ CSS

* {margin: 0; padding: 0;}

#logo {position: relative;}

.horse {
    width: 469px; height: 54px;
    background: url(http://www.google.co.in/logos/2012/muybridge12-hp-f.jpg);
}

.frame {position: absolute; left: 0; top: 0; z-index: 1;}

/*Clicking the label will select the checkbox which will be used to
trigger the animation of the horses*/

#play_button:checked ~ .horse {
    -webkit-animation: horse-ride 0.5s steps(12, end) infinite;
    -webkit-animation-delay: 2.5s;
    -moz-animation: horse-ride 0.5s steps(12, end) infinite;
    -moz-animation-delay: 2.5s;
    /*Lets add a pre-anim which will start slowly and merge into the fast animation*/
    background-position: -2412px 0;
    -webkit-transition: all 2.5s cubic-bezier(0.550, 0.055, 0.675, 0.190);
    -moz-transition: all 2.5s cubic-bezier(0.550, 0.055, 0.675, 0.190);
}

/*Hide the play image*/
#play_button:checked ~ #play_image img{
    left: -68px;
    -webkit-transition: all 0.5s ease-in;
    -moz-transition: all 0.5s ease-in;
}

/*804px is the width of the image with 12 horse frames
steps are used in the animation to have the best animation effect
it will position the horse frames accurately in the boxes instead of
tweening it px by px all the way through*/
@-webkit-keyframes horse-ride {
    0% {background-position: 0 0;}
    100% {background-position: -804px 0;}
}
@-moz-keyframes horse-ride {
    0% {background-position: 0 0;}
    100% {background-position: -804px 0;}
}

#play_button {display: none;}
#play_label {
    width: 67px; height: 54px;
    display: block;
    position: absolute; left: 201px; top: 54px; z-index: 2;
}
#play_image {position: absolute; left: 201px; top: 54px; z-index: 0;
    overflow: hidden; width: 68px; height: 55px;
}
#play_image img {position: absolute; left: 0; top: 0;}