Hello @subbarayudu ,

try to change this

<div class="col-sm-2 cell">${Number}</div>
<div class="col-sm-3 cell">{{data.text.column_label}}</div>

and 

<div class="col-sm-2 cell">${Number}</div>
<div class="col-sm-3 cell">{{data.text.column_label}}</div>

this is going to make the Number bigger and the Assessment smaller

Hope that this helps you!

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All the Best,
Stefan