Make calculation of height and width inverse, that is, the way it is convenient for me
Disable `calculator_button` in css
Use flex(dynamic) width for all buttons
Add resolution presets by formula: `f(x) = 512 + (1024-512)/4*x, 0 <= x <= 4 `
Add ratios presets
Simplified ratio calculation, swapped calculator button icon for text to ensure browser compatibility, updated button styles, simplified self.image declaration.