Test Environment:

1. Go to system settings.

2. Navigate to 'Accessibility' and activate it.

3. Navigate to 'Contrast theme' and activate it.

4. Select 'Desert/Aquatic' High Contrast theme in the combo box.

Repro Steps:

1. Open given URL https://canvasjs.com/docs/charts/chart-options/axisx/viewport-minimum/ in Edge.

2. Graph page will be open. 

3. Turn on High contrast theme. 

4. Verify that Graphs are not adapting high contrast Aquatic and Desert modes or not. 

Actual Behavior:

Graphs are not adapting high contrast Aquatic and Desert modes. They remain same as in normal mode.  

Expected Behavior:

 Graphs should adapt high contrast Aquatic and Desert modes as defined. All elements should adapt to respective modes properly.