refactor: layout of login related page

[ruibaby]

What type of PR is this?

/area ui
/kind improvement
/milestone 2.13.0

What this PR does / why we need it:

优化登录相关页面的布局，修复在不同分辨率下的样式问题。

Which issue(s) this PR fixes:

Fixes #5346

Special notes for your reviewer:

测试登录或者注册页面，任意放大或者缩小页面，观察页面样式是否正常。

Does this PR introduce a user-facing change?

优化登录相关页面的布局，修复在不同分辨率下的样式问题。

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.82%. Comparing base (5fdf6c0) to head (cc06f45).
Report is 31 commits behind head on main.

❗ Current head cc06f45 differs from pull request most recent head 59e85e1. Consider uploading reports for the commit 59e85e1 to get more accurate results

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #5413      +/-   ##
============================================
- Coverage     56.91%   56.82%   -0.09%     
- Complexity     3319     3332      +13     
============================================
  Files           587      588       +1     
  Lines         18968    19044      +76     
  Branches       1401     1396       -5     
============================================
+ Hits          10795    10822      +27     
- Misses         7594     7641      +47     
- Partials        579      581       +2     

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[sonarcloud]

Quality Gate passed

Issues
0 New issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[JohnNiang]

/lgtm

It works very well.

[f2c-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: JohnNiang

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• ui/OWNERS [JohnNiang]

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