By default all line-breaks within the content of a Passage are automatically converts to HTML <br> elements, and these can effect the outcome of CSS styling.
Your current Passage content generates a HTML structure something like the following, which I have simplified slightly. You can use your web-browser’s Web Developer Tools to see the full structure.
<tw-passage tags="">
<!-- HTML elements of left sidebar removed... -->
This is what your feed looks like...
<br>
<div class="leftcolumn" data-raw="">
<br>
<img src="https://i.postimg.cc/Y9jfjPy2/fb1.png" alt="Phone" style="width:100%" data-raw="">
<br>
</div>
<br>
<div class="rightcolumn" data-raw="">
<br>
<img src="https://i.postimg.cc/G2NPDjZF/fb2.png" alt="Post" style="width:100%" data-raw="">
<br>
</div>
<br>
<br>
<!-- HTML elements of right aligned link removed... -->
</tw-passage>
…and the <br> elements within the two <div> elements (especially the rightcolumn one) are what’s causing the imaged not to alight vertically.
You can use Collapsing whitespace markup to suppress those unwanted <br> elements…
The padding property doesn’t support an auto value.
The filter property doesn’t support an alpha() function, it does however support an opacity() function. So maybe you meant to write filter: opacity(80);