Are you using tabs as a navigational tool on your own or your client's website? It can be a great way to organise information on a page, but has some pitfalls as well. One of them is the fact that at the time of writing you are not able to make one particular tab the "default" tab that opens when the user visits the particular page. To achieve this you would have to leave the tab open in the designer that you want to default to. Not a great solution, but don't worry, there's help available via custom code. To make the first tab the default tab, follow the 5 steps below:
Keep in mind that if you are using Webflow's own pagination feature inside one of your tab panes, there might be issues and the pagination for this section might stop working.
Want some more info on this? Check out the following thread in the Webflow forum, which I found very helpful and have based my solution on: Setting Default Active Tab.