/*  HEADER   */
.bg-gradient-primary {
    background: linear-gradient(90deg, #1b6ec2, #155a99);
}


a {
    color: #0077cc;
    text-decoration: none;
}

    a:hover {
        color: #005fa3;
        text-decoration: underline;
    }

/*  BOTÓN PRINCIPAL  */
.btn-primary {
    color: #fff;
    background-color: #1b6ec2;
    border-color: #1861ac;
}

    .btn-primary:hover {
        background-color: #155a99;
        border-color: #134d82;
    }


html, body {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

footer {
    flex-shrink: 0;
}