There is no hover color for filter button

[citra-rahman]

Step To Reproduce

1. Go to https://skill-search.topcoder-dev.com/
2. Login as ToniJ(topcoder)
3. Scroll until you found + filter button

Expected Result

There is a light-grey color appear when we hover the filter button

Actual Result

There is no light-grey color appear when we hover the filter button

Screenshot

Video

https://www.dropbox.com/s/iyp5g579x8x9k0h/U-Bahn%20employee%20skills%20search%20portal%20-%20Google%20Chrome%202020-07-12%2018-26-38.mp4?dl=0

Device/OS/Browser Information:

a. Device: Lenovo (laptop)
Processor : AMD A9-9420 RADEON R5, 5 Compute Cores 2C+3G 3.00 GHz
RAM : 8 GB
System Type: 64 Bit OS, x64-based processor
Pen or touch: no pen or touch
b. OS: Windows 10 Home Single Language
c. Browser: Chrome Version 83.0.4103.106 (Official Build) (64-bit)

[callmekatootie]

duplicate of #188