Inconsistent breakpoints in CSS - 64em vs 62em

[bigjollygiant14]

Briefly ( tweet size ) describe your issue and how you discovered it.

Media breakpoints are inconsistent for col-md-*. /css/flexboxgrid.css lists breakpoint as 62em, but /src/flexboxgrid.css and /dist/flexboxgrid.css use 64em as breakpoint.
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Expected behavior

They should be consistent (62em)
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Actual behavior

They are inconsistent.

/css/flexboxgrid.css - @media only screen and (min-width: 62em) {
/dist/flexboxgrid.css - @media only screen and (min-width: 64em) {
/src/flexboxgrid.css - @Custom-Media --md-viewport only screen and (min-width: 64em);
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Steps to reproduce behavior

npm install --save flexboxgrid
View css files

• OS: OSX El Capitan 10.11.6
• Browser: N/A
• code/fiddle/pen url: N/A