What does this CSS code do?

This CSS styles a compact, stylized calendar component, giving it a card-like appearance with a modern and clean aesthetic. Here’s a breakdown of how each section contributes to the overall design:

.calendar-container

• Purpose: Centers the entire calendar and limits its width.
• Key Styles:
  • margin: 0 auto; → Horizontally centers the calendar.
  • max-width: 260px; → Makes the calendar compact.
  • font-family: "Oswald", sans-serif; → Uses a modern sans-serif font for a clean look.

.calendar-header

• Purpose: Decorative top bar of the calendar, like a stylized "binding" or visual top section.
• Key Styles:
  • display: flex; and justify-content: space-around; → Evenly spaces its child elements horizontally.
  • background-color: #cc5446; → Red background gives it a bold, eye-catching look.
  • border-top-right-radius and border-top-left-radius: 10px; → Rounded top corners.
  • border-bottom: 4px solid #ffffff; → Creates a "cut-off" look separating the header from the body.

.calendar-header span

• Purpose: Acts as decorative tabs or binding rings, mimicking spiral-bound or clipped calendar styles.
• Key Styles:
  • background-color: #edf0f1; → Light gray background matches the calendar body.
  • border: 4px solid #ffffff; → Thick white border for contrast.
  • width: 20px;, height: 40px; → Small tab-like elements.
  • border-radius: 6px; → Rounded for a soft appearance.
  • position: relative; top: -20px; → Pulls the tabs upward so they appear attached to the top of the calendar (above the red header).

.calendar-body

• Purpose: The main content area showing the date info.
• Key Styles:
  • background-color: #edf0f1; → Soft, neutral background.
  • min-height: 100px; → Ensures some vertical space.
  • border-bottom-right-radius and border-bottom-left-radius: 10px; → Rounded bottom to match the header.
  • padding: 20px; and text-align: center; → Creates space and centers content.

Headings inside .calendar-body

These headings represent different parts of the date (e.g., day of the week, date number, and month).

1. h1

• Small, uppercase (e.g., "Monday")
• font-size: 0.80em; → Very subtle emphasis.

2. h2

• Large number (e.g., "9")
• font-size: 4em; → Stands out prominently.

3. h3

• Medium emphasis (e.g., "June 2025")
• Lighter font weight for less emphasis than the date number.