Anirban Dey

Added Prim’s minimum spanning tree algorithm #8

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Added Prim’s minimum spanning tree algorithm for issue #13

The "Close" option is written in German

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When you click on File option inside the application, the option to "Close" the application is written in German as "schließen". Given that rest of the application's options are in...

Dark Mode not working.

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## When I press the dark mode/theme button in the navbar, it is not working.

Fixed all the errors due to improper code for cards and unclosed DIVs. + added a card. Before:  After: