In the past, i used to use a .gif file to create an animated spinner or loader form my ajax calls.

today, you dont have to use images, you can use css code,

i got this code for my notes just incase i need it in the future, here is the CSS code to create a spinner:

Usage: <div class="spinner-loader"></div>

CSS CODE:

/*SPINNER  START
usage: <div class="spinner-loader">Loading…</div>
source:
http://www.css-spinners.com/spinner/spinner
http://www.css-spinners.com/css/spinner/spinner.css
 */
.spinner-loader{ text-align:center; }
@-moz-keyframes spinner-loader {
  0% {
    -moz-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  100% {
    -moz-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
@-webkit-keyframes spinner-loader {
  0% {
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
@keyframes spinner-loader {
  0% {
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  100% {
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
/* :not(:required) hides this rule from IE9 and below */
.spinner-loader:not(:required) {
  -moz-animation: spinner-loader 1500ms infinite linear;
  -webkit-animation: spinner-loader 1500ms infinite linear;
  animation: spinner-loader 1500ms infinite linear;
  -moz-border-radius: 0.5em;
  -webkit-border-radius: 0.5em;
  border-radius: 0.5em;
  -moz-box-shadow: rgba(255,255,255, 1.0) 1.5em 0 0 0, rgba(255,255,255, 1.0) 1.1em 1.1em 0 0, rgba(255,255,255, 1.0) 0 1.5em 0 0, rgba(255,255,255, 1.0) -1.1em 1.1em 0 0, rgba(255,255,255, 1.0) -1.5em 0 0 0, rgba(255,255,255, 1.0) -1.1em -1.1em 0 0, rgba(255,255,255, 1.0) 0 -1.5em 0 0, rgba(255,255,255, 1.0) 1.1em -1.1em 0 0;
  -webkit-box-shadow: rgba(255,255,255, 1.0) 1.5em 0 0 0, rgba(255,255,255, 1.0) 1.1em 1.1em 0 0, rgba(255,255,255, 1.0) 0 1.5em 0 0, rgba(255,255,255, 1.0) -1.1em 1.1em 0 0, rgba(255,255,255, 1.0) -1.5em 0 0 0, rgba(255,255,255, 1.0) -1.1em -1.1em 0 0, rgba(255,255,255, 1.0) 0 -1.5em 0 0, rgba(255,255,255, 1.0) 1.1em -1.1em 0 0;
  box-shadow: rgba(255,255,255, 1.0) 1.5em 0 0 0, rgba(255,255,255, 1.0) 1.1em 1.1em 0 0, rgba(255,255,255, 1.0) 0 1.5em 0 0, rgba(255,255,255, 1.0) -1.1em 1.1em 0 0, rgba(255,255,255, 1.0) -1.5em 0 0 0, rgba(255,255,255, 1.0) -1.1em -1.1em 0 0, rgba(255,255,255, 1.0) 0 -1.5em 0 0, rgba(255,255,255, 1.0) 1.1em -1.1em 0 0;
  display: inline-block;
 
  width: 1em;
  height: 1em;
  margin: 1.5em;
  overflow: hidden;
  text-indent: 100%;
}

/*SPINNER  END*/