You can use an Aritic application to round the borders and execute border utilities to style them with a proper radius of an element. You can create components across all the pages to provide common elements.
1. Go To Aritic PinPoint dashboard choose left menu and under “Assets” click on “Landing Pages” as shown below.
2. Click on “+Design New Landing Page” on the top right corner.
3.Choose any Theme and click on “Next” as shown below.
4.Select any element in the template to modify the Border of the particular content.
5.Click on ‘Inspector‘ and select Border to edit border size and shape.
6.Click on Border Roundness to make the border as round as shown below.