* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #ccc;
}

.container {
    padding: 5.6vw;
}

.formulario__title {
    text-align: center;
    margin-bottom: 16px;
}

.formulario__button {
    margin-top: 20px;
}

.btn-success {
    margin-right: 12px;
}

.row__name {
    margin-bottom: 16px;
}

.row__email {
    margin-bottom: 24px;
}

.row__complemento {
    margin-bottom: 24px;
}

.row {
    justify-content: center;
}


@media (max-width: 768px) {
    .container {
        width: 85%;
    }
    
    h4 {
        margin-bottom: 1em;
        font-size: 18px;
    }
    
    .row {
        display: block;
    }

    .form-control {
        width: 60vw;
        margin-bottom: 16px;
    }
    
    .btn {
        height: 50%;
    }
}

@media (max-width: 640px) {

    .form-control {
        width: 80vw;
        margin-bottom: 16px;
    }
}