Issue with Github logo in Dark-mode

[vermastra]

Discription

On the main website there is an issue with the github logo in dark-mode . Github logo is not visible in dark mode because of its black color.

In Light mode

In Dark mode

One can clearly see the difference on the top in both the mode.

Please assign it to me, I will make it to look like this!!!
@Harkishen-Singh @muskankhedia