Rotating a background image with CSS3

Question

I have a background image that has an arrow that points to the right. When a user clicks on the button, the selected state changes the arrow to point down (using a different

Answer 1

Here is a rotating css class that I have used to spin a background image:

.rotating {
  -webkit-animation: rotating-function 1.25s linear infinite;
     -moz-animation: rotating-function 1.25s linear infinite;
      -ms-animation: rotating-function 1.25s linear infinite;
       -o-animation: rotating-function 1.25s linear infinite;
          animation: rotating-function 1.25s linear infinite;
}

@-webkit-keyframes rotating-function {
  from {
    -webkit-transform: rotate(0deg);
  }
  to {
    -webkit-transform: rotate(360deg);
  }
}

@-moz-keyframes rotating-function {
  from {
    -moz-transform: rotate(0deg);
  }
  to {
    -moz-transform: rotate(360deg);
  }
}

@-ms-keyframes rotating-function {
  from {
    -ms-transform: rotate(0deg);
  }
  to {
    -ms-transform: rotate(360deg);
  }
}

@-o-keyframes rotating-function {
  from {
    -o-transform: rotate(0deg);
  }
  to {
    -o-transform: rotate(360deg);
  }
}

@keyframes rotating-function {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}