Improving hero slider, featured and filters-grid block

[anuj-adobe]

Please always provide the GitHub issue(s) your PR is for, as well as test URLs where your change can be observed (before and after):

Fix #76

Test URLs:

• Before: https://main--infosys--aemsites.hlx.live/iki
• After: https://issue-76--infosys--aemsites.hlx.live/iki

[aem-code-sync[bot]]

Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed. In case there are problems, just click a checkbox below to rerun the respective action.

• [ ] Re-run PSI checks
• [ ] Re-sync branch

Commits

* [44ae186](https://github.com/aemsites/infosys/commit/44ae186e6d78545b5e369571d074baf32e76b5db) :white_check_mark: (latest) * [bd5f870](https://github.com/aemsites/infosys/commit/bd5f870fbfa8bc79f76bc14d87869a9e4cc16dae) :white_check_mark: * [d9c9735](https://github.com/aemsites/infosys/commit/d9c97359f9cfdaf79c17e4d85f10bbeb3bb2ae83) :white_check_mark:

[aem-code-sync[bot]]

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