add separate footer css#698

VAIBHAVBABELE wants to merge 4 commits intoPRIYESHSINGH24:mainPRIYESHSINGH24/SMART_DSA_NOTEBOOK:mainfrom

VAIBHAVBABELE:issue-footerVAIBHAVBABELE/DSA_SOLUTION_PLATFORM:issue-footerCopy head branch name to clipboard