Hiding section border in dashboard

Sometimes we have to use multiple sections to complete some requirement but it can be possible that user don't like to see reports separated by sections. In this case we have to hide border of sections. Steps to hide borders of section are as below:

1.Create report and publish it in dashboard. We can see border of section here:

2. Edit dashboard and click on properties of Section:

3. Expend Custom CSS Style option (HTML Only). In both text boxes, write display:hidden;

4. Save, run and see the result:

Thanks!!