change styling of box outline and fonts in private tabs page

[bradleyrichter]

Test Plan

• Open a PT using a 0.23.x build that has Tor integrated
• ensure that the PT tab under brave matches the proposed design/style mentioned below.

Original issue

current:

proposed:

needs: CSS replacent

[diracdeltas]

@rossmoody are you doing the restyling? if so you should work off of the tor/0.23.x branch

note that the 'Learn more...' text should be kept even though it's missing in the mockup

[rossmoody]

I'm getting up to speed on git process and this is my trial ticket Brad's helping me with. I'm going to attempt a restyling of sorts here but ty for the heads up on both fronts there.

[diracdeltas]

@rossmoody cool. FYI the object you will want to edit is styles in js/about/newprivatetab.js

[diracdeltas]

fixed by 4ebc04b

[kjozwiak]

Verified on macOS 10.13.4 x64 using the following build:

• 0.23.11 6565c06
• muon: 7.1.0
• libchromiumcontent: 67.0.3396.87

Example:

[kjozwiak]

@bradleyrichter the current text differs from the proposed screenshot in the original comment. Can you please confirm that the one I added above is the expected text/design?

[kjozwiak]

We're still not using the summary that @bradleyrichter proposed in the original comment. With the latest 0.23.12 88f6f07 build, we're still using the following summary which isn't the one that's being proposed:

@bradleyrichter @jenn-rhim is this expected?

[bradleyrichter]

this needs to defer to @flamsmark and @mandar-brave because it has changed a few times since the original screen shot that has become git-stale.

[diracdeltas]

@bradleyrichter i can confirm this is using the latest text that @flamsmark drafted (to the best of my knowledge)

[bradleyrichter]

ok. And it looks fine to me anyway.

cc @kjozwiak

[kjozwiak]

Thanks @bradleyrichter @diracdeltas 👍

@srirambv @btlechowski @GeetaSarvadnya looks like what we're currently seeing is the correct text.

[kjozwiak]

Verified using macOS 10.13.4 x64 using the following build:

• 0.23.14 f4da855
• muon: 7.1.1
• libchromiumcontent: 67.0.3396.87

Verified on Windows 10 x64 using

• `0.23.14 f4da855
• Muon - 7.1.1
• libchromiumcontent - 67.0.3396.87

Verified on Ubuntu 18.04 x64 using the following build:

• 0.23.17 bc754eb
• muon: 7.1.2
• libchromiumcontent: 67.0.3396.87