...
Default channel sidebar width: 240px
For window widths < 820:
not resizable
Touch devices
not resizable
For window widths 821-1199:
min-width = 200px
max-width = 256px (default)264px
For window widths 1200-1680:
min-width = 200px
max-width = 304px
For window widths > 1680px:
min-width: 200px
max-width: 440px
...
Resizing the RHS
For window widths < 820:
not resizable
Touch devices
not resizable
For window widths 821-1199
NOTE: RHS overlaps the channel at this viewport width
default = 400px
min-width = 304px
max-width = 400px (default)
For window widths 1200-1680
default width = 400px
min-width = 304px
max-width = 464px
For window widths > 1680px
default width = 500px
min-width: 304px
max-width: 776px
...