CSS list-style-type not working

Decimal is default for an "ol". No need to declare it. Also the numbers are there just falling off the side of the page i.e. invisible. Adjust your padding and get rid of the redundant declaration. See here

display:list-item;
list-style-position:outside;

It may give problem if list display: attribute is set to some thing else than display:list-item;

Because of your padding reset, the numbers are actually off to the left of the page. Try adding:

list-style-position: inside;