Setting custom font-family for typing input - card template

Hello,
Is there any possibility to set custom font-family for input field in the iOS app?
My card template works fine in the desktop app but not on mobile one. The card template is as follows:

.card {
 font-family: American Typewriter;
 font-size: 25px;
 text-align: center;
 color: black;
 background-color: white;
}

input#typeans { 
font-family: American Typewriter;
font-size: 25px;
padding: 10px
}

.mobile {
	font-family: American Typewriter;
}

<script>
const input = document.getElementById("typeans").style.fontFamily = "American Typewriter";
</script>

In the mobile app only the input text does not follow the CSS and the font-family of a text in it is Arial.
The result on the screenshot:

The typing area lies outside the webview, so CSS does not affect it. I’m afraid it does not currently support custom fonts.