Align icons in the Home, Navbar, Footer and Search components

[DenysLins]

Fixes Issue

Closes #1972

Changes proposed

Align icons vertically in the Home, Navbar, Footer, and Search components.

Check List (Check all the applicable boxes)

• [X] My code follows the code style of this project.
• [ ] My change requires changes to the documentation.
• [ ] I have updated the documentation accordingly.
• [X] All new and existing tests passed.
• [X] This PR does not contain plagiarized content.
• [X] The title of my pull request is a short description of the requested changes.

Screenshots

Note to reviewers

The issue only refers to some icons not aligned, but I found other icons with the same problem and fixed all of them.