Datatable header cell alignment

Webix JS
#1

Hi,
I’m having a issue with the header and cells not aligning.

https://snippet.webix.com/ll0sjf98

#2

fixed with the following css

.custom .webix_ss_header .webix_hcolumn:nth-child(1) .webix_hcell {  
		border-right: 3px solid #000;
		text-align: right;
}

 .custom  .webix_column:nth-child(1) .webix_cell{  
		background-color: #F7F7F7;
		border-right: 3px solid #000;
}