.ajaxvatchecker-validating-vat-loader {
    display:block;
    float:left;
    width:30px;
    margin-left:5px;
}

.form-list li input.ajaxvatchecker_inputtext {
    background-image: url("../images/ajax-loader.gif");
    background-repeat:no-repeat;
    background-position:  bottom right; 
    background-size: 25px;
}

.ajaxvatchecker-validating-message.success{
    color:#11b400;
}