I dont know much about HTML, and i have only listed items very basically via the spreadsheet. If you having trouble putting in the HTML tags then this link might be helpful.
http://www.lissaexplains.com/htmlarea/htmleditor.shtml
A little girly i know But you can type out what you want, how you want and click the <> button and it will display it in HTML tags for you. Then you can copy paste it.
Of course this doesnt make it much quicker but doing it this way should always make it display correctly first time because theres less chance of human error.