CSS is not respected

That is due to the nature of list numbers. But we can give some space around the image, by setting its margin. Try this example:

<img src="/files/0219.jpg" style="float:left; margin: 20px;"/>
#abc
#def
#ghi
  

Make sure the image and the first item #abc are in different line. If not, as in this example below:

<img src="/files/0219.jpg" style="float:left; margin: 20px;"/>#abc
#def
#ghi
  

would produce result similar to # Admin message in Snap2.png.

I am changing the category because what reported is not a bug of the module, and I am setting the report as fixed because it got an answer.