Some random patches

[jjuhl]

No description provided.

[texus]

Replace std::list with std::vector in Layout constructor

On first sight it does look like you are correct and std::vector can be used here as the erase calls seem to happen on elements BEHIND the iterator that is kept. However maybe you can also get rid of the std::advance usages?

For example

auto nextOperandIt = operandIt;
std::advance(nextOperandIt, 1);

looks like it could just be the following now:

const auto nextOperandIt = operandIt + 1;

std::advance was only used because std::list was used.

Simplify CSS

The max-width: 100%; probably needs to stay. This custom.css file exists to make the generated code compatible with the website. And on the website the max-width of body is altered (https://github.com/texus/TGUI-website/blob/master/resources/style.scss#L22).

[jjuhl]

Ok. I'll drop the max-width change.
As for the std::advance, I did think of that but chose to maybe make that a future commit since I couldn't convince myself that changing it would be 100% safe, so I just stuck to what I knew would be safe (and then more changes can maybe come later).

[jjuhl]

Dropped the max-width change.
The other bits can maybe come in future commits. But thank you very much for pointing it out :-)