round box 570px center

• box creates a box around the container and uses the colours from the template's style.ini as default colours (background_alt and text)
• any of the classes info, tip, important, alert, help, download, todo will add a special note container with a corresponding icon
• the classes danger, warning, caution, notice, safety use safety colours (and no icons)
• round can be added to anything with a background colour or a border and will only work in modern browsers (no Internet Explorer)