Fixed console errors in multiple files and remove unnecessary slider hover styling for mobile

[usafder]

Pull Request Summary

Fixes #900

Checklist

• [x] I have summarize what this PR fixes above
• [x] I have provided the issue ID/URL above
• [x] I have not added Bootstrap or jQuery and used correct styling guide.
• [x] This PR fixes only the issue mentioned above (create separate PRs for separate issues)
• [x] I was the first one to claim the issue or I created the issue - I created the issue

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[zero-to-mastery-bot[bot]]

🙏 Thanks for your pull request @usafder, The team will now review and merge this request. In the mean time why not check out some of the other opensource projects available, contributions are greatly appreciated!

Some of the most popular are

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PR Statistics

#️⃣ PR Number:	➕ Line Additions:	🗑️ Line Deletions:
902	46	36

📑 Files Changed:	⭐ Repo Stars:	🔱 Total Forks:
2	198	405

[zero-to-mastery-bot[bot]]

🙏 Thanks for your pull request @usafder, The team will now review and merge this request. In the mean time why not check out some of the other opensource projects available, contributions are greatly appreciated!

Some of the most popular are

• Student Resources
• ZTM Job Board
• Complete Web Developer Manual

---

PR Statistics

#️⃣ PR Number:	➕ Line Additions:	🗑️ Line Deletions:
902	49	38

📑 Files Changed:	⭐ Repo Stars:	🔱 Total Forks:
3	198	405

[zero-to-mastery-bot[bot]]

🙏 Thanks for your pull request @usafder, The team will now review and merge this request. In the mean time why not check out some of the other opensource projects available, contributions are greatly appreciated!

Some of the most popular are

• Student Resources
• ZTM Job Board
• Complete Web Developer Manual

---

PR Statistics

#️⃣ PR Number:	➕ Line Additions:	🗑️ Line Deletions:
902	49	38

📑 Files Changed:	⭐ Repo Stars:	🔱 Total Forks:
3	198	405

[zero-to-mastery-bot[bot]]

🙏 Thanks for your pull request @usafder, The team will now review and merge this request. In the mean time why not check out some of the other opensource projects available, contributions are greatly appreciated!

Some of the most popular are

• Student Resources
• ZTM Job Board
• Complete Web Developer Manual

---

PR Statistics

#️⃣ PR Number:	➕ Line Additions:	🗑️ Line Deletions:
902	49	38

📑 Files Changed:	⭐ Repo Stars:	🔱 Total Forks:
3	198	405

[zero-to-mastery-bot[bot]]

🙏 Thanks for your pull request @usafder, The team will now review and merge this request. In the mean time why not check out some of the other opensource projects available, contributions are greatly appreciated!

Some of the most popular are

• Student Resources
• ZTM Job Board
• Complete Web Developer Manual

---

PR Statistics

#️⃣ PR Number:	➕ Line Additions:	🗑️ Line Deletions:
902	49	38

📑 Files Changed:	⭐ Repo Stars:	🔱 Total Forks:
3	198	405

[brittneypostma]

This line that you added is not valid. I am unable to pull in this request as it will break things. If you need it for Hacktoberfest, I can add the label so you get credit for attempting.