Consider adding a text banner to your homepage to inform your customers about closures, holidays, or any other important updates.
To do this, log in to your dashboard and head to 'Shop Editor'.
Select Content > Header > Promotion Bars and select the Content: Text Banner option and add to page.
Hover over the content block you have just added and select the cog. You will then see the content block settings on your left-hand side. Here you will be able to add the text, change the background colour, text colour and more.
Make sure to hit 'Update & Save' and Publish Live for the changes to take effect.
If you wish to delete the content block when you no longer need it, make sure you are in your Shop Editor view and hover over the banner on the right-hand side until the cog and bin shows, then press the bin icon and hit Update & Save.