Ionic - Change css of shadow class in html - html

Question

I have a side menu always visible in my ionic aplication, the problem is I don't know how to change the #shadow-root css, I tried a few things but still don't work.
The problem is that when I make the menu smaller and empty space is left there. I want to remove that empty space, because when the screen is bigger the empty space is even bigger.
I searched in the debug console and this is the troublesome element:
This is my code:
HTML:
<ion-split-pane contentId="side-menu" class="menu-left" when="md">
<ion-menu side="start" menuId="side-menu" contentId="side-menu" mode="md" class="menu2">
<ion-header>
<ion-toolbar>
<ion-title>Start Menu</ion-title>
</ion-toolbar>
</ion-header>
<ion-content>
<ion-list lines="none" class="menu-content">
<ion-item (click)="navigateHome()">
<ion-icon name="home" slot="start"></ion-icon>
<ion-label>Inicio</ion-label>
</ion-item>
<ion-item (click)="navigateAnimes()">
<ion-icon name="library" slot="start"></ion-icon>
<ion-label>Animes</ion-label>
</ion-item>
<ion-item (click)="navigateMine()">
<ion-icon name="bookmarks" slot="start"></ion-icon>
<ion-label>Mi lista</ion-label>
</ion-item>
<ion-item (click)="navigateSettings()">
<ion-icon name="options" slot="start"></ion-icon>
<ion-label>Ajustes</ion-label>
</ion-item>
</ion-list>
</ion-content>
</ion-menu>
<ion-router-outlet id="side-menu"></ion-router-outlet>
</ion-split-pane>
CSS:
.menu-left{
--width: 200px;
}
.menu-content {
height: 100% !important;
width: 200px;
}
Can anyone tell me how to apply my css attributes to the inner-scroll scroll-y in the shadow class please?

Answer 1

#phantomiam123 I updated my css class and doesn't work:
My css class now is:
.menu-left{
--width: 200px;
}
.menu-content {
height: 100% !important;
width: 200px;
}
.inner-scroll .scroll-y {
width: 200px;
}
And in the debug console:

Answer 2

This seems to work for me for now:
.split-pane-visible > ion-menu {
max-width: 200px!important;
}