HTML

<div style="position: absolute; top: 13px; left: 110px;"> <img class="animatebox animation swing" src="http://www.01gif-anime.com/img/religion/ange/anges043.gif" width="80" height="85"alt=""/></div>
<div style="position: absolute; top: 13px; left: 1116px;"><img class="animatebox animation swing" style="animation-delay: 0.8s; -webkit-animation-delay: 0.8s; -moz-animation-delay: 0.8s;" src="https://lh4.googleusercontent.com/-lSiHuAZm5bc/U5RaaH_cXFI/AAAAAAAAeIg/-0GjVWnQKfw/w99-h150-no/3.gif"width="80" height="85" alt=""/></div>

HTML  para  los  imágenes

<img class="animatebox animation swing" src="https://img-fotki.yandex.ru/get/5005/romanova-atal.1e/0_4dcae_64d59b28_orig" alt="" width="164" height="126" /><img class="animatebox animation swing" src="https://img-fotki.yandex.ru/get/5113/94039626.61/0_652c6_4acd64e3_orig " alt="" width="164" height="126" />

CSS

<style type="text/css"><!--
.animatebox {
 -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>