.btn-submit{
    background-color:#d00406;
    color: white;
}

.btn-submit:hover{
    color:#d00406;
    box-shadow:#d0040799 0px 0px 10px;
}

.container-first{
    margin-top: 100px;
}

.card-contact{
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.4);
}