gistfile1.txt

@-webkit-keyframes sway
{
from {-webkit-transform: rotate(-10deg);}
to {-webkit-transform: rotate(10deg);}
}
@-moz-keyframes sway
{
from {-moz-transform: rotate(-10deg);}
to {-moz-transform: rotate(10deg);}
}
@keyframes sway
{
from {transform: rotate(-10deg);}
to {transform: rotate(10deg);}
}
img {
  animation: sway 2s linear 5s infinite alternate;
  -moz-animation: sway 2s linear 5s infinite alternate;
  -webkit-animation: sway 2s linear 5s infinite alternate;
}