Style Name Syntax

In regular JavaScript, style names are written in hyphenated-lowercase:

const styles = {
  'margin-top':       "20px",
  'background-color': "green"

In React, those same names are instead written in camelCase:

const styles = {
  marginTop:       "20px",
  backgroundColor: "green"

This has zero effect on style property values, only on style property names.

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