How do I make ion-menu-button larger in md(Android) mode?

I changed the font-size of my ion-menu-button (hamburger button) using the following CSS code.

ion-menu-button  {
  font-size: 31px !important;
}

The above code seems to work on my app in ios mode. (See attached screenshot)

But that was not the case when I tried running the app on md mode(Android). The hamburger button is still small even and the CSS code doesn't have an impact (See attached screenshot)

Some fixes I tried include adding a CSS with .md class to target the hamburger button specifically but it didn't work.

I tried fixing my problem by applying this code from Stack Overflow: How do I make ion-menu-button larger?

After applying the fix above, the hamburger button now has the right size but the toolbar appears to become larger and I don't want my toolbar to look larger that's why I reverted the fix and was hoping someone could help me solve my issue. (See attached screenshot)

Simply by using the zoom property:

ion-menu-button  {
 zoom: 1.8;
}

Thank you for all of your feedbacks. I was able to find a solution to my problem by adding class="ion-no-padding ion-no-margin" to my <ion-menu-button>. I'm not exactly sure how it work but I'm satisfied with this workaround. My final code is:

<ion-menu-button auto-hide="false" class="ion-no-padding ion-no-margin"></ion-menu-button>