Remove the bottom border in tabs

[stuarthendren]

This may only effect the primary mode.
Get a style of

    border-bottom: 1px solid var(--colors-grey4);

That causes extra line under the tabs not required

[commitd-bot]

🎉 This issue has been resolved in version 5.3.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀