I am embedding 3 videos side by side using this code

index.html
<iframe id="choices" class="menu" name="choices" src="https://drive.google.com/file/d/1HfsdxnUK1eXHDW9Xqs2pdRwNpHhjR6ayC7/preview" width="32%" height="480" allow="autoplay"></iframe>
<iframe id="choices" class="menu" name="choices" src="https://drive.google.com/file/d/1HfxnsdUK1eXHDW9Xqs2pdRwNpHhjR6ayC7/preview" width="32%" height="480" allow="autoplay"></iframe>
<iframe id="main" class="mainContent" name="main" src="https://drive.google.com/file/d/1HfsdxnUK1eXHDW9Xqs2pdRwNpHhjR6ayC7/preview" width="32%" height="480" allow="autoplay"></iframe>

does anyone know how to toggle the markdown block display to the wide width the way we can do with iframe images ect?