Gradient spans the entire html component instead of body

[skydread1]

Closes #55

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.35%. Comparing base (e4f2748) to head (85632e3).

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Additional details and impacted files

@@           Coverage Diff           @@
##           master      #56   +/-   ##
=======================================
  Coverage   91.35%   91.35%           
=======================================
  Files           4        4           
  Lines          81       81           
=======================================
  Hits           74       74           
  Misses          7        7           

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