.form-group {
   display: flex;
   flex-direction: column;
   margin-bottom: 30px;
 }
 .form-group label{
     flex: 100%;
     margin-right: 30px;
 }
 .form-control{
    border-radius: 5px;
    width: 90%;
    padding: 10px;
    border: 1px solid #999
 }

 .btn-enviar{
   border: none;
   background-color: #5a99f8;
   color: #fff;
   padding: 15px 40px;
   margin-top: 20px;
   width: 100%;
   cursor: pointer;
 }

 .btn-enviar:hover{
   background-color: #999;
 }


 @media screen and (min-width: 800px) {
    .form-control{
        width: 600px;
     }
 }