Want to print html table whr i repeat thead.During a page break in btwn row the borders appear on colspan thead. Used border-collpase: collapse

Question

https://drive.google.com/file/d/1KB2TMkp99H3fK9HHz8ua8pTdvIr9BDKv/view?usp=sharing[**enter link description here**]1

window.print() is giving cell borders on colspan<