product code diplay

Hi,

It depends.
On which page ? Could you provide a link ?

Hello,

Some Css can solve your issue, see this tutorial in order to learn how to add custom Css.
The way to proceed is to find your product code class, to have the good selector, And use display command, in order to have only 1 element by line, like this :

product_code_class {
    display: block;
}