I had a similar issue. I wanted to center three images in the footer of my email. I got it to work like this.
<div style="display:inline-flex; width:100%;">
<img style="width: 15%; height:fit-content; margin: 0 7.5%;" src="https://example.com/employment-ontario.png" alt='img-logo0'/>
<img style="width: 15%; height:fit-content; margin: auto 7.5%;" src="https://example.com/canada-logo.png" alt='img-logo1'/>
<img style="width: 15%; height:fit-content; margin: auto 7.5%;" src="https://example.com/ontario-govt.png" alt='img-logo2'/>
</div>
the image with margin: 0 7.5%
is the largest of all the images (if you want to imitate align-items: center
set the other two to images to margin: auto 7.5%
, they will automatically center your images.
Note: In this example 7.5% is for only one side of your container, so total margin on the left and right will be 15%. for one img, giving a total of 45% used.
Sum of mine is 90% , but you get the idea.
Image of what it looks like below.