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Brio Base

Ratio

The ratio helper keeps a box at a fixed aspect ratio whatever its width, which is perfect for media placeholders, thumbnails, galleries and banners. Pick ratio-1x1, ratio-4x3, ratio-16x9 or ratio-21x9, or set any ratio with the --ui-aspect-ratio variable.

1The four built-in ratios

ratio-1x1, ratio-4x3, ratio-16x9 and ratio-21x9 next to each other, filled with a plain div.

1:1
4:3
16:9
21:9

2Video placeholder

A 16:9 poster image with a centred play button, ready for a video player of your choice.

Video poster

3Square product thumbnails

ratio-1x1 with object-fit-cover gives every product the same tile, whatever the photo size.

Physio session

Physio session

Teeth whitening

Teeth whitening

Child check-up

Child check-up

Sports injury clinic

Sports injury clinic

Braces consultation

Braces consultation

Heart screening

Heart screening

4Cinematic hero banner

ratio-21x9 for a wide banner with a headline overlay.

Healthy smiles start here

Start in minutes and get help from a real person whenever you need it.

5Map placeholder

A 4:3 box reserved for a map, showing the address until the map loads.

Brio Base157 Riverside Drive, Porto

6Custom 3:2 photo

Any ratio works with the --ui-aspect-ratio variable: 2 / 3 = 66.67% for classic photo prints.

Inside our new heart screening clinic
3:2 · Staying active after an injury

7Portrait team cards

A 3:4 portrait ratio (133.33%) for team photos in cards.

Nora Kowalski

Nora Kowalski

Support Specialist

Luna Harlow

Luna Harlow

Data Analyst

Leo Tanaka

Leo Tanaka

QA Engineer

8Vertical stories

A 9:16 ratio (177.78%) for phone sized stories or short clips in a scrolling row.

Story by Maya BrennanMaya
Story by Lucas DuarteLucas
Story by Zoe LarsenZoe
Story by Ivy VargaIvy

9Chart area

A 16:9 box that keeps a simple bar chart in proportion on every screen.

Monthly bookings

10Blog card cover

ratio-16x9 as a card image keeps every post card in a grid the same height.

A parent's guide to childhood vaccinations
design

A simple monthly skin check

Jan 15, 2026

11Caption over a gradient

A 4:3 image with a gradient overlay so white caption text stays readable.

EdinburghGeneral practice

12Mixed ratio gallery

Combining 1:1, 4:3 and 16:9 tiles in one responsive grid.

Gallery photo 1
Gallery photo 2
Gallery photo 3
Gallery photo 4

13Thumbnails in table cells

A small ratio-1x1 box keeps order line images square inside a table.

ImageItemPrice
Vaccination
Vaccination$32.00
Dental cleaning
Dental cleaning$97.00
Annual check-up
Annual check-up$152.00

14Empty cover placeholder

A dashed 4:3 area that reserves space for an image that has not been chosen yet.

No cover image yet

15Colour swatches

Empty square ratios make perfect colour swatches for a style guide.

primary

primary

secondary

secondary

success

success

info

info

warning

warning

danger

danger

16Video thumbnails with badges

Duration and status badges positioned over 16:9 thumbnails.

12:34New

What to expect at your first dental visit

11:47

Our favourite tips for busy weeks

4:12

How to choose the right service

17Media list

Fixed width 4:3 thumbnails beside article titles in a reading list.

  • Understanding your blood test results

    Sep 14, 2026 · 12 min read

  • When to choose a video consultation

    Mar 8, 2026 · 6 min read

  • The small habits that make a big difference

    Feb 27, 2026 · 12 min read

18Responsive ratio

A small custom class changes --ui-aspect-ratio per breakpoint: square on phones, 21:9 on tablets and up.

Care that puts you first

19Round avatars

ratio-1x1 with rounded-circle keeps profile pictures perfectly round even when the source is not square.

Ella Rossi
Ella
Jonah Nguyen
Jonah
Finn Okafor
Finn
Owen Alvarez
Owen

20Loading skeleton

A 16:9 placeholder block with placeholder-glow while the real image and text load.

The skeleton reserves the exact space, so the page does not jump when content arrives.