fix(grid): use correct selector for size specific column span

[sivaraam]

No description provided.

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[codecov-io]

Codecov Report

Merging #862 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #862   +/-   ##
=======================================
  Coverage   98.96%   98.96%           
=======================================
  Files          69       69           
  Lines        3181     3181           
  Branches      387      387           
=======================================
  Hits         3148     3148           
  Misses         33       33

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[sivaraam]

@googlebot 👍

[googlebot]

CLAs look good, thanks!

[yeelan0319]

Good catch! Thanks @sivaraam

[sivaraam]

Good catch! Thanks @sivaraam

@yeelan0319 You're welcome!