HTML Explanation
01
The timeline content is wrapped inside a div with the class timeline.
02
Each milestone in the timeline is structured within a div with either the left-container or right-container class to alternate the position of the entries.
03
Each container includes an img element representing the milestone and a div with the class text-box, containing a heading (h2), a date (small), and a description (p).
04
A decorative arrow (span) is positioned based on the container’s side.
CSS Explanation
01
The CSS styles the timeline and manages the animation effects.
02
The body is given a deep blue background (#071678), and the timeline’s maximum width is set to 1200px, centered on the page.
03
Each .container element takes up 50% of the width, alternating its position left or right depending on its class.
04
This layout is animated using @keyframes named movedown, which animates each container from a slightly translated Y-axis position into place with opacity transition from 0 to 1.
05
The img elements are circular and positioned at the timeline’s center.
06
The timeline line is styled using a pseudo-element ::after on the .timeline, which animates its height from 0 to 100% using the moveline animation.
07
The text-box is styled with padding and a light yellow background (#eddc24), and each arrow is placed on either side of the text box using CSS border tricks to create the triangular shape.
Javascript Explanation
01
No Javascript Code Needed