Fix subtle background gradient on featured works

[kirkkwang]

Summary

The gradient was throwing an invalid property value error which should be fixed now.

Guidance for testing, such as acceptance criteria or new user interface behaviors:

• Take a look at the featured work when logged in as an admin user.
• Notice that there is a very subtle gradient on the background

Type of change (for release notes)

• notes-bugfix Bug Fixes

Before

After

@samvera/hyrax-code-reviewers

[github-actions]

Test Results

    17 files  ±0      17 suites  ±0   2h 16m 58s ⏱️ +21s
 6 706 tests ±0   6 409 ✅ ±0  297 💤 ±0  0 ❌ ±0 
13 180 runs  ±0  12 785 ✅ ±0  395 💤 ±0  0 ❌ ±0 

Results for commit e9e360f. ± Comparison against base commit 69f0b81.

This pull request removes 273 and adds 273 tests. Note that renamed tests count towards both.

spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to create #<Hyrax::PermissionTemplate:0x00007f2782cc21c0>
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to create #<Hyrax::PermissionTemplate:0x00007f8357405150>
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to create #<Hyrax::PermissionTemplateAccess:0x00007f2782ce2588>
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to create #<Hyrax::PermissionTemplateAccess:0x00007f835b17d0c8>
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to destroy AdminSet: 88744f00-2673-43d6-a8bf-efafa5395752
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to destroy Hyrax::AdministrativeSet: cb866d41-6d87-437f-99af-1101ce781f8a
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to edit AdminSet: b2b20d31-8376-418d-a189-d46a9fac4140
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to edit Hyrax::AdministrativeSet: ccb398e0-6fdd-4589-80a0-faaef6085a03
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to update AdminSet: 3d638d81-f4b5-4c8f-8cab-5947edd776c1
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to update Hyrax::AdministrativeSet: 5f17f912-b947-479a-8099-10c1b6f1bfd9
…

spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to create #<Hyrax::PermissionTemplate:0x00007fa600e16ba0>
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to create #<Hyrax::PermissionTemplate:0x00007fbb66620510>
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to create #<Hyrax::PermissionTemplateAccess:0x00007fa600ecc810>
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to create #<Hyrax::PermissionTemplateAccess:0x00007fbb67a0b688>
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to destroy AdminSet: f6b2bfe9-dd6b-477e-acc6-a034a9a47fb0
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to destroy Hyrax::AdministrativeSet: 04ad0b32-9aa3-477e-8197-288039053a53
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to edit AdminSet: a8a05b8b-81a5-403b-ae12-cc6f25998f9c
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to edit Hyrax::AdministrativeSet: 770f12a4-5469-41ea-8a6c-01583f18dce5
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to update AdminSet: 10363ff6-3e3e-4a48-b581-1e259bf13006
spec.abilities.ability_spec ‑ Hyrax::Ability AdminSets and PermissionTemplates a user without edit access is expected not to be able to update Hyrax::AdministrativeSet: 5c715bee-2463-4d09-a0b7-b00b430fa445
…