The default Lnk.Bio layout and most Themes come with a border around the Lnks to highlight their content. The border looks something like this:
If you wish to remove such border, you can do so very quickly: head over to My page => Content, scroll down until you see your Lnk Block, then tap Edit block as shown below.
From the contextual menu that opens, select Edit effect as shown below.
Once the tab is open, you will see the No Border button effect. Select it, as shown below:
All done! All your Lnks will now appear without any border. Here's an example:
