Fixed missing icons

[dnbute]

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), along with a short summary of changes:

Issue

Fixes #538

Changelog:

• Added background image for missing icons
• Changes some dimensions so icons don't get clipped

Test URLs:

• Original: https://www.sunstar.com/jp/sustainability/environment
• Before: https://main--sunstar--hlxsites.hlx.live/jp/sustainability/environment
• After: https://i-538--sunstar--hlxsites.hlx.live/jp/sustainability/environment
• Original: https://www.sunstar.com/jp/sustainability/editorial-policy
• Before: https://main--sunstar--hlxsites.hlx.live/jp/sustainability/editorial-policy
• After: https://i-538--sunstar--hlxsites.hlx.live/jp/sustainability/editorial-policy

Library

• New Blocks introduced in this PR
  If yes, please provide details below
  Block Name : For e.g. cards

• Documented in sidekick library

• New variations introduced in this PR
  Variation Name : For e.g. cards (grid)

• Documented in sidekick library

• New mixins introduced in this PR
  Mixin Name : For e.g. compact, white

• Documented in sidekick library

[aem-code-sync]

Hello, I'm the AEM Code Sync Bot and I will run some test suites that validate the page speed.
In case there are problems, just click the checkbox below to rerun the respective action.

• Re-run PSI Checks

[aem-code-sync]

Page	Scores	Audits	Google
/jp/sustainability/editorial-policy
/jp/sustainability/environment

[ehrro]

There is a problem with sizing and alignment can you please enhance it? Thank you:

[dnbute]

@ehrro should be better now 👍