Prev and next button should be a button

[afc163]

close #280

[codecov]

Codecov Report

Merging #282 into master will increase coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #282      +/-   ##
==========================================
+ Coverage   91.33%   91.38%   +0.05%     
==========================================
  Files           3        3              
  Lines         323      325       +2     
  Branches      112      113       +1     
==========================================
+ Hits          295      297       +2     
  Misses         28       28              

Impacted Files	Coverage Δ
src/Options.jsx	93.54% <100.00%> (+0.10%)	⬆️
src/Pagination.jsx	90.94% <100.00%> (+0.03%)	⬆️

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