Fix background layout to inherit from parent

[Balstun]

Setting the Layout window to be 100% of the viewport results in a partially white background. The Layout has been modified to inherit its boundaries from its parents, as to circumvent this issue.

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[Balstun]

Setting the Layout to height: 100% appears to result in a similar white background problem for desktop devices. Apparently, the viewport limitation for mobile is intentional, as described in this StackOverflow discussion.

To-Do:

• Fix height of layout to be 100vh
• Enforce different layout parameters for mobile views