[1.1.1] tips-and-tricks-item prototype - Scale Image Property

[Linver]

Hi, can be possible add a sort of "scale-image" property or "no-stretchable-image" to the new tips-and-tricks-item prototype?

This is an image of width 382 and height 400 in the K2 wiki without any scale property:

This is how is shown the same image in the tips-and-tricks interface:

Pratically if mods want add images instead of simulations is difficult to understand how give it:

Not clear why this image is less scaled and not centered. Maybe is caused by this style:

Will be very useful decide if this image can be stretchable and if can be centered (also since can be added only one image to tip seems more useful have it centered).