body{background:#efefef;font-family:Arial,sans-serif;margin:0;padding:30px}.formulario{width:540px;height:750px;background:#fff;margin:auto;padding:45px 28px;box-sizing:border-box;box-shadow:0 2px 7px rgba(0,0,0,.35)}input,textarea{width:100%;border:none;border-bottom:1px solid #d0d0d0;padding:14px 0;margin-bottom:22px;font-size:15px;outline:none;color:#555;box-sizing:border-box}textarea{height:220px;resize:none}button{width:250px;height:42px;display:block;margin:0 auto;background:#c84f4f;color:#fff;border:none;border-radius:3px;font-size:20px;font-weight:bold;cursor:pointer;position:relative}button:disabled{opacity:.8;cursor:not-allowed}.loader{display:none;width:18px;height:18px;border:3px solid #fff;border-top:3px solid transparent;border-radius:50%;animation:girar .8s linear infinite;margin:auto}.enviando .texto-btn{display:none}.enviando .loader{display:block}@keyframes girar{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}#resposta{margin-top:22px;text-align:center;font-size:15px;padding:12px;border-radius:4px;display:none}#resposta.sucesso{display:block;background:#e7f7e7;color:#217a21;border:1px solid #b7dfb7}#resposta.erro{display:block;background:#fde8e8;color:#b32626;border:1px solid #efb3b3}@media(max-width:600px){body{padding:10px}.formulario{width:100%;height:auto;min-height:700px}}