CSS3 Swinging keyframe animation

Introduction:

Using CSS3 keyframe animations, we can control the exact style of an element at any point in time. Here we use keyframes to create a swinging effect, by modifying an element's rotation gradually over time until resting position, or 0 degrees.

CSS:

<style>

.swing{
 -webkit-animation:swinging 10s ease-in-out 0s infinite;
 -moz-animation:swinging 10s ease-in-out 0s infinite;
 animation:swinging 10s ease-in-out 0s infinite;
 -webkit-transform-origin:50% 0;
 -moz-transform-origin:50% 0;
 transform-origin:50% 0;
}

@-webkit-keyframes swinging{
 0% { -webkit-transform: rotate(0); }
 5% { -webkit-transform: rotate(10deg); }
 10% { -webkit-transform: rotate(-9deg); }
 15% { -webkit-transform: rotate(8deg); }
 20% { -webkit-transform: rotate(-7deg); }
 25% { -webkit-transform: rotate(6deg); }
 30% { -webkit-transform: rotate(-5deg); }
 35% { -webkit-transform: rotate(4deg); }
 40% { -webkit-transform: rotate(-3deg); }
 45% { -webkit-transform: rotate(2deg); }
 50% { -webkit-transform: rotate(0); } /* Come to rest at 50%. The rest is just stillness */
 100% { -webkit-transform: rotate(0); }
}

@-moz-keyframes swinging{
 0% { -moz-transform: rotate(0); }
 5% { -moz-transform: rotate(10deg); }
 10% { -moz-transform: rotate(-9deg); }
 15% { -moz-transform: rotate(8deg); }
 20% { -moz-transform: rotate(-7deg); }
 25% { -moz-transform: rotate(6deg); }
 30% { -moz-transform: rotate(-5deg); }
 35% { -moz-transform: rotate(4deg); }
 40% { -moz-transform: rotate(-3deg); }
 45% { -moz-transform: rotate(2deg); }
 50% { -moz-transform: rotate(0); } /* Come to rest at 50%. The rest is just stillness */
 100% { -moz-transform: rotate(0); }
}

@keyframes swinging{
 0% { transform: rotate(0); }
 5% { transform: rotate(10deg); }
 10% { transform: rotate(-9deg); }
 15% { transform: rotate(8deg); }
 20% { transform: rotate(-7deg); }
 25% { transform: rotate(6deg); }
 30% { transform: rotate(-5deg); }
 35% { transform: rotate(4deg); }
 40% { transform: rotate(-3deg); }
 45% { transform: rotate(2deg); }
 50% { transform: rotate(0); } /* Come to rest at 50%. The rest is just stillness */
 100% { transform: rotate(0); }
}

</style>

HTML

<img class="swing" src="winter.jpg" /> 


<img class="swing" src="winter.jpg" style="
 animation-delay: 0.8s;
 -webkit-animation-delay: 0.8s;
 -moz-animation-delay: 0.8s;
 animation-delay: 0.8s;
 "
/> 


<img class="swing" src="winter.jpg" style="
 animation-delay: 0.5s;
 -webkit-animation-delay: 0.5s;
 -moz-animation-delay: 0.5s;
 animation-delay: 0.5s;
 "
/>