Either will only take effect on the weather container. Other elements in the page will be left alone unchanged.
The reason for the weather container being indented from the left is because you have pasted the markup into an HTML list item. If using HTML stacks, clear the default ‘your text goes here’ content first and paste your markup as plain text.
I am expert on all things Twitter Boostrap, so let me know if you have any other questions.
In all seriousness though, I’ve helped you resolve the box sizing problem. If there are other, separate, more complicated issues you need help with, I think it would be best to email me with your contact details, and I can get a quote generated for you. Perhaps within a few hours, I can then look at your whole setup in detail and run all the normal diagnostics / testing. It also ensures I’m fairly compensated for my time too. You can get in touch here.