How to allign input fields in centre in a card body

Hi,

Yesterday I started working with nebular theme, really nice designs. Today I wanted to build a login form inside a card body, so far I put all the elements I need inside, now I am trying to centre them, but I can not make it work. I tried using css but it did not work. Maybe someone here can help me? I am a amateur in css so I do not know if I did it right. I have an nrwl angular project and my component is a lib with its own scss but right now that is not in use.

Here is my html:

```

Moniesta Giris

```

My theme.scss
```
@import '~@nebular/theme/styles/theming';
@import '~@nebular/theme/styles/themes/default';
$nb-enable-css-custom-properties:true;

$nb-themes: nb-register-theme((

// add your variables here like:
layout-background-color: #FFFFFF,
input-tiny-padding: 1rem,

// color-primary-100: #f2f6ff,
// color-primary-200: #d9e4ff,
// color-primary-300: #a6c1ff,
// color-primary-400: #598bff,
// color-primary-500: #3366ff,
// color-primary-600: #274bdb,
// color-primary-700: #1a34b8,
// color-primary-800: #102694,
// color-primary-900: #091c7a,

), default, default);

```