As described in Issue Report 844...
https://github.com/jasmine/jasmine/issues/844
...style rules in the app-being-tested may incidentally affect elements
in the Jasmine HTML Report container, as long as there is a chance that
the app-being-tested has CSS style rules for classes (or IDs) that
Jasmine uses.
This fix attempts to bring Jasmine to a state where each and every class
it uses always ends with "_jasmine-css" which should be unique enough to
ensure that CSS in the app-being-tested won't affect the Jasmine report,
because no app-being-tested is ever likely to use classes that end with
"_jasmine-css"
I'll be surpised if this commit is good enough as it is now, on the
first attempt to fix#844, because of reasons I'll explain in either
the Issue or the Pull Request.