fix: login bg displayed imcompletely

[liuxiran]

Please answer these questions before submitting a pull request

• Why submit this pull request?
• Bugfix
• New feature provided
• Improve performance

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Bugfix

• Description
  current login page’s background(update dashboard to master) displayed imcompletely:

• How to fix?

updated less files.

[LiteSun]

This background issue is not reproduced in my local environment (latest master branch code), could you please provide more information? @liuxiran

[liuxiran]

This background issue is not reproduced in my local environment (latest master branch code), could you please provide more information? @liuxiran

After I rm node_modules and reinstall node dependences, this page looks ok now.

after compared the difference between the two, I found that:
currently the login component is rendering undering pro-basicLayout

while the page in the issue is rendering itself

It may be caused by the package version, and I could not reproduce it now.

close this pr when it can be reproduced, I'll reopen it again.