You can enter content as HTML using the HTML button in the WYSIWYG Editor (What You See Is What You Get). We do recommend that you use this only if you have knowledge of how to write HTML, as we do not provide support or training on this. You can copy the text and images styling from an existing website and paste it directly into the editor to contain that style. Keep in mind: if you have copied an image in and the original site removes the images, it will be removed from My Listing as well.
W3Schools is a great online resource if you need assistance with HTML coding.