fix(styles): fix right sidebar on IE and Edge

[YuriiKrvc]

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[codecov]

Codecov Report

Merging #4658 into development will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           development    #4658   +/-   ##
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  Coverage        71.44%   71.44%           
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  Files              259      259           
  Lines             8378     8378           
  Branches          1562     1562           
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  Hits              5986     5986           
  Misses            1985     1985           
  Partials           407      407

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[OlegDubrovskyi]

IE11, Edge, Chrome, Firefox - right sidebar looks good. But behavior left sidebar is incorrectly after click by links in right sidebar.

Steps to reproduce:

1. Use IE11 browser
2. Open ngx-bootstrap demo
3. Go to any component
4. In right sidebar click by any links

Actual result: I don't see left sidebar
Expected result: I should see left sidebar

[OlegDubrovskyi]

@Yuriy777 After fix needs to fix the same for other browsers besides IE

[OlegDubrovskyi]

Looks good.
Checked on IE11, Edge, Chrome, Firefox, Safari