.loading-icon {
    width: 32px;
    height: 32px;
    background: url('../images/350.png') no-repeat;
    display: block;
    background-size: cover;
    text-indent: -999em;
    overflow: hidden;
    -webkit-animation:spin 1s linear infinite;
    -moz-animation:spin 1s linear infinite;
    animation:spin 1s linear infinite;
}
@-moz-keyframes spin { 100% { -moz-transform: rotate(360deg); } }
@-webkit-keyframes spin { 100% { -webkit-transform: rotate(360deg); } }
@keyframes spin { 100% { -webkit-transform: rotate(360deg); transform:rotate(360deg); } }