Change size, bold service titles

I would like the Title names to be larger and bold in this widget that is pulling to content in.
Please let me know what I should do.

Thank you in advance.

Hello there,

Try adding this CSS code to Appearance > Customize > Additional CSS from dashboard.

    .roll-icon-list .list-item .content > h3 {
      font-size: 22px;
      font-weight: bold;