The best and safest way to customize a template is via the child theme system. This is basically a way of duplicating a BoldGrid theme into a new custom theme so you can make custom changes. If you’re unfamiliar with HTML, PHP, CSS, or JavaScript, however, you would be best advised to get help from a developer or designer.
Unfortunately we’re not equipped to provide development or design services upon request. In some rare cases, our agents have been able to provide some basic CSS as a general example, but providing free coding services is not something we’re able to do in every case.