1. utils.css: Added rules for classes "custom-external" (external icon on after), "orcid-clipboard-wrapper" and "orcid-clipboard-wrapper > input[name="code"]".
2. landing-utils.css: Added variables for colors and css rules for landing related classes (e.g. landing-modal-header, download-from, landing-action-tooltip).
3. common folder: The_Global_Goals_Icon_Color.svg added.