Thick Empty Border Problem

[AlperGuler52]

Hello,I want to remove empty borders but ı can't do it how can ı do it?
https://playground.jsreport.net/w/anon/Jecw~npf

[admin]

Try to change this line

<cellStyles count="1">
		<cellStyle name="Normal" xfId="0" builtinId="0"/>
</cellStyles>	

to

<cellStyles count="1">
		<cellStyle name="Normal" xfId="1" builtinId="0"/>
	</cellStyles>	

but I am not an expert on the xlsx xmls... Try to take time and study with excel app (and unzipping xlsx) what the underlying xmls actually represent.