How does one remove the lines between rows of a mat-table in angular?

Please have a look at my website here:

http://35.232.230.0:81

This shows a mat-table in an angular application. I would like to remove the white lines between the rows of the table. How does one do this?

Thanks.

td.mat-cell {
     border-bottom-style: none;
}

Or

table-container {
     td.mat-cell {
         border-bottom-style: none;
    }
}