Added ability to modify the components' dom structure

[kshih-lab49]

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Checklist

• Program builds without error or warnings
• You have added/updated tests for this pull request
• Test runs without errors or warnings
• Render matches expected designs

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[codecov]

Codecov Report

Merging #50 (730a43d) into main (3cc43c6) will increase coverage by 2.53%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #50      +/-   ##
==========================================
+ Coverage   81.25%   83.78%   +2.53%     
==========================================
  Files           2        4       +2     
  Lines          32       37       +5     
  Branches       10       12       +2     
==========================================
+ Hits           26       31       +5     
  Misses          6        6              

Impacted Files	Coverage Δ
src/Flash.tsx	76.92% <100.00%> (+0.92%)	⬆️
src/components/Container.tsx	100.00% <100.00%> (ø)
src/components/Value.tsx	100.00% <100.00%> (ø)

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