# html.

• HTML <!DOCTYPE> declaration — w3schools.
• language code reference (idioma do arquivo) — w3schools.

# css.

• display: inline-block — w3schools.
• lists — w3schools.
• horizontal & vertical align — w3schools.
• line-height property — w3schools.
• icons tutorial — w3schools.
• positioning — w3schools.
• how to create a two column layout — w3schools.
• multiple columns — w3schools.
• overflow — w3schools.
• horizontal scroll menu — w3schools.
• responsive table — w3schools.
• horizontal scrollable image gallery — w3schools.

# resources.

• bootstrap icons — icons.