Help How do I make tabs appear on the side instead of the top?

[bastion]

I'm trying to make some small edits to the CS for a group. I prefer having tabs on the side since it's easier to access them on mobile imo, but I have no idea how to make that happen. Here is the code.

[centerblock=70][justify][font=Karla]
[h]character name[/h]

[CENTER][fieldset=• • •][heightrestrict="100%; max-height: 600px; width: auto; aspect-ratio: 669/960; 500"][IMG]image link[/IMG][/heightrestrict][/fieldset][/CENTER]


[tabs]
[tab=Basics]
[b]name[/b]:
[b]age[/b]: (remember that on average just-graduating genin are between 11-12 years old. You don’t have to stick to this age range, but try to stay around it.)
[b]birthday[/b]: (month and day here, year only if you’d like)
[b]gender[/b] | pronouns[/b]:
[b]affiliation[/b]: (village of nationality)
[b]rank[/b]: (genin, chunin, etc.)

[/tab]
[tab=Physical]
[b]height[/b]:
[b]weight[/b]:
[b]appearance[/b]: (if no image is included, please include a little blurb about your characters physical traits. If you do have an image, first please credit the artist, and feel free to include only the essentials here)

[/tab]
[tab=Persona]
[b]traits[/b]: (optional; list some negative and positive traits here)
[b]personality[/b]:
[/tab]
[tab=Background]
[b]history[/b]:
[b]relationships[/b]: (family, friends, etc.)

[/tab]
[tab=Shinobi Information]
[b]stats[/b]: ninj/fuin #: __,  taij #: __,  genj #: __,  intell. #: __,  str #: __,  spd. #: __, stam. #: __,  h. seals #: __

[b]team[/b]: (should be left empty until teams are assigned):
[b]combat style/focus[/b]: (if your character is a genin, this is something that will likely change throughout the role-play as they grow. They can even not be entirely sure what their combat style is yet)

[b]clan[/b]: (optional, put n/a if none; if you have a unique one in mind, please run it by a GM first!)
[b]chakra nature[/b]:
[b]kekkei genkai[/b]: (optional, put n/a if none; if you have a unique one in mind, please run it by a GM first!)
[b]dojutsu[/b]: (optional, put n/a if none; if you have a unique one in mind, please run it by a GM first!)
[b]equipment[/b]: (this can include any items your character carries that may not be considered 'general-use' in the wardrobe of a shinobi. If they do not carry extra items, please put standard gear here)

[/tab]
[tab=Misc]
any additional information (ex: pets, notable info not covered in the sheet, etc.) can go here

[/tab]
[/tabs][/font][/justify]