html, body {
    min-height: 100vh;
    margin: 0;
    display: flex;
    flex-direction: column;
    font-size: 14px;
}

main {
    flex: 1 0 auto;
}

footer {
    flex-shrink: 0;
}


@media (min-width: 768px) {
    html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}