.form-content{margin-top:20px}iframe:before{content:"";display:block;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:50px;height:50px;border-radius:50%;border:3px solid red;border-top-color:#333;animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(1turn)}}