Help with responsive banner code in House Ads on mobile

Soutien
1

Hello friends,

we use the code below to show in house responsive image ads

<a href="MY WEBSITE LINK" target="_blank">
    <img src="IMAGE LINK" style='width:69%;' border="0" class="banner" alt="Null">
  </a>

on the desktop is fine but on the mobile view, the banner is showing very small. see the below

image
image804×593 38.2 KB

3

!! the filed only accepts HTML.

4

What’s your point?

How does that prevent you from using @media?

5

am sorry i don`t know how to use it.
can you advise?