Here is a list of some CSS timelines examples.
Building a Vertical Timeline With CSS and a Touch of JavaScript
Dev: Envato Tuts+
Vertical Timeline
Dev: CodyHouse
CSS Timeline
Dev: Nils Wittler
Horizontal timeline
Dev: Ritesh Kumar
Responsive slider timeline with Swiper
Dev: Bruno Carvalho
Vertical Timeline
Dev: Sava Lazic
Timeline
Dev: Mert Cukuren
Building a Horizontal Timeline With CSS and JavaScript
Dev: Envato Tuts+
Super Simple Bootstrap Responsive Timeline
Dev: Jennifer Perrin
Simple Responsive Timeline
Dev: Brady Wright
CSS3 Timeline
Dev: Peiwen Lu
Responsive Vertical Timeline
Dev: Ratko Solaja
Horizontal & vertical bootstrap timeline
Dev: W.D.M.Group
Flexbox Timeline Layout
Dev: Paul Barker
Timeline
Dev: Clint Brown
Responsive Timeline using CSS Grid
Dev: Dianna Cheng
Bootstrap Timeline
Dev: Jason Davis
Timeline
Dev: Ross Topping
CSS Timeline for Giggles
Dev: Alan Houser
Responsive HTML Timeline
Dev: Joshua P. Larson
Timeline Style Navigation
Dev: Naila Ahmad
Timeline
Dev: Zed Dash
Responsive Material Design Timeline
Dev: Samet Erpik
YGC V2 Timeline
Dev: Yago Gonzalez
Nested & Color Coded Interactive Timeline
Dev: Kent Chang
Timeline UI
Dev: Simon Reinsperger
Timeline scribble
Dev: Michaela
Timeline
Dev: Charlotte Dann
Scroll Timeline
Dev: Viktor
Pure CSS Timeline
Dev: Christian Fei
Personal Resume/Portfolio
Dev: David Seyboth
Responsive Timeline Concept
Dev: Jones Joseph
Timeline
Dev: Chris Sundberg
Vertical Left and Right Timeline
Dev: CP Lepage
Timeline
Dev: cenda
Timeline UI Design
Dev: bberameric
Timeline
Dev: Shireen Taj
Vertical Timeline – Notifications
Dev: Alina N.
Timeline of HTML
Dev: Vaughan Curd
Super Simple Timeline
Dev: HTML Codex
Responsive Grid Timeline
Dev: Shireen Taj
UIkit 3 CSS Timeline
Dev: Corentin
CSS Timeline Multi
Dev: Aslam
Vertical dark timeline
Dev: Devcrud
CSS Timeline
Dev: Aslam
Timeline CSS
Dev: Jonathan Snook
Pretty Timeline
Dev: Evan Wieland
CSS Timeline with Custom Properties
Dev: Stas Melnikov
Vertical Left and Right Timeline
Dev: CP Lepage
Simple Responsive Timeline
Dev: keith.geek
Advanced TimeLine : HTML / CSS / JavaScript
Dev: MO7AMED EL DMRDASH
CSS Timeline
Dev: Rafael Youakeem
Comments & feeadbacks & history timeline
Dev: Hosam Elnabawy
Responsive Timeline
Dev: Arnaud Balland
Timeline
Dev: Nomisoft
Single div timeline
Dev: Niels Voogt
CSS V-timeline w/ time intervals
Dev: Andres
Timeline
Dev: No Mam
Timeline
Dev: radhika prajapati
Timeline
Dev: Bruno Rodrigues
CSS3 Timeline
Dev: Krishna Babu
Timeline animation
Dev: Chris Wright
Collapsable timeline
Dev: Barney Parker
Narrow Vertical Timelinr
Dev: Tyler Berry
Timeline for a Portfolio
Dev: Andrew R McHugh
CSS3 Timeline
Dev: Krishna Babu
CSS Timeline
Dev: Darcy Voutt
Timeline
Dev: Ross Topping
Responsive timeline
Dev: Clay Larson
HR Timeline
Dev: Youri
Animated circle timeline
Dev: Jen Huang
CSS3 Horizontal Timeline
Dev: Peiwen Lu
Simple responsive vertical timeline with css
Dev: hassan kamal
Timeline
Dev: Basile Therer
Ionic timeline
Dev: Marc
Timeline Sequence
Dev: Youssef
Life timeline
Dev: Nicolas Slatiner
Timeline Slider Navigation
Dev: Tyler Fowle
Timeline
Dev: Damian Drygiel
Timeline
Dev: Amy Carter
Horizontal Timeline with Swiper
Dev: Dzulfikar Adi Putra
Timeline Scroll
Dev: Marco Dell’Anna
Physic Milestones Timeline
Dev: januaryofmine
Bitcoin timeline with fixed header using flexbox
Dev: Matys
Horizontal Timeline Responsive
Dev: Nicko Afan
Single div timeline
Dev: Niels Voogt
Project Timeline
Dev: Russell Bishop
Simple Animated Timeline Scroller
Dev: Jean-Marc Goepfert
Simple Calendar & Scheduler App
Dev: Vlad Racoare
Horizontal timeline
Dev: Marina Marques
Process Timeline
Dev: Pop Razvan
Timeline
Dev: Tony Banik
Horizontal Timeline
Dev: Vincent Ramos
Timeline inspiration
Dev: Natalia Davydova
CSS Timeline Horizontal
Dev: Jessyca