CSS (Cascading Style Sheets)

A parent folder is a directory containing one or more folders and files.

Deprecated HTML tags are old tags replaced by updated alternatives in modern web design and development.

A unique ID you can use to link your Google Analytics account to your Webflow site.

A space to hold and access sites, members, settings, and integrations. All users start with a Workspace that can become collaborative when and as needed.

Keyboard shortcuts are combinations of keys on a computer keyboard that perform a specific action or command within an application or operating system.

The “max-width” CSS property defines an element’s maximum width.

Font weight refers to the thickness or density of a typeface’s strokes.

A standard markup language that web browsers use to display websites.

A Webflow canvas setting for creating styles that affect viewports with a minimum width of 768px and a maximum width of 990px. Also known as the tablet media query.

A measurement unit relative to an element's parent.

The specific domain or subdomain where your Webflow site is displayed.

Real-Time Streaming Protocol (RTSP) is a standardized network protocol for transmitting real-time multimedia data like audio and video.

A Hypertext Markup Language (HTML) tag is a code snippet that defines and describes the structure and content of web pages.

A second-level domain (SLD) is the part of a domain name that precedes a top-level domain (TLD).

The <strong> element defines important text with added semantic importance.

A certificate authority (CA), also known as a certification authority, issues digital certificates that verify a website’s owner.

Content you create once, then publish in many different places across your website. As you update this content in the CMS, it automatically updates wherever it exists on your site, making it convenient to create and manage larger websites.

Mid-September 2019, new European requirements for authenticating online payments were introduced in Europe as part of the second Payment Services Directive (PSD2). The Strong Customer Authentication (SCA) requirements apply to businesses in the European Economic Area (EEA) that accept online card payments from cardholders whose banks are also located in the EEA.Webflow Ecommerce payments are PSD2 and SCA compliant (i.e., support 3D Secure payments) for European customers.If you’re a merchant in the European Economic Area (EEA), all you need to do to ensure that your Webflow Ecommerce store is PSD2 and SCA compliant for your European customers is to republish your store if it wasn’t published on or after September 11, 2019. Read more about how to make your ecommerce store compliant in our Payment gateway article.

An HTML attribute you can use to give a short description of the contents of a webpage. Search engines often display this in results pages (SERPs).

Allows you to create and format headings, paragraphs, blockquotes, images, and video all in one place instead of having to add and format them individually.

CMS field groups let you organize a Collection's fields into named, labeled sections, making large or complex collections easier for editors to navigate.

JSON-LD is a structured data format that describes a page's content in a machine-readable way, helping search engines and AI crawlers understand what's on the page.

The "height: auto" CSS property automatically adjusts an element’s height based on its content.

You can set any Collection field as "Required," which means that a value must be added to that field in the Collection item before it can be published. The only Collection field that cannot be made required is the Switch field.

You can sort your Collection items in multiple ways — select the field from the Collection you wish to filter from, then select the ordering option.

Domain name forwarding is a process that automatically redirects visitors from your domain name to a different web address.

Width defines how wide an element can be. This can be defined in absolute terms (pixels) or relative terms (ems, rems, percentages, viewport-height, or viewport-width).

The location your sitemap is stored in relation to your site, and what’s used when submitting your sitemap to search engines.

AI credits are the metered unit used to track usage of AI-powered features, with usage typically visible by user, project, or date range.

A hotlink — also known as a remote or inline link — is a hyperlink that directs to a resource, such as an image or a file, without the owner’s explicit permission.

Decryption is the process of reverting encrypted data to its original format.

The <canvas> tag in HTML5 creates a container for dynamic graphics and image rendering on a webpage.

BiDi stands for bidirectional. When a document is BiDi, it supports text that reads from right to left and left to right.

DHTML, or Dynamic HTML, is a web-development technique combining HTML, CSS, and JavaScript to create dynamic, interactive web pages and complex web applications.

The flex-grow CSS property defines how much an element grows relative to other flexible items inside the same flex parent.

The display: inline CSS property is a display option that controls an element’s appearance and layout.

A variable font is a single font file that contains multiple weights, widths, or styles, letting you adjust typography continuously instead of loading a separate file for each variant.

Static content is content that’s not bound to any Collections or dynamic elements.

Jank describes subpar functionality in a web interface that hinders or disrupts user activity.

A section in the Style panel that houses CSS properties for changing how an element appears, such as its opacity, outline, and box shadows.

A comment is a text note in source code that offers context, internal information, or other guidance to any developers using it.

A 256 x 256 px image associated with your website that shows up when your website link is saved to an iPhone home screen.

Semantics accurately represent the structure and purpose of content in computer languages, enabling web developers and programmers to ensure the written code produces an output legible to humans and machines.

An end user is an individual or group who directly interacts with a particular product, service, or user interface (UI), such as a website or application.

A widget is an interactive element embedded in a user interface that facilitates specific user actions or displays important information at a glance.

Adding a Google site verification meta tag to your website's HTML code allows Google to verify that you own the site.

The area where you can manage your profile, email settings, and security settings.

A typography element that is used to link to other pages or sections of a webpage.

A Webflow plan that you can add/apply to individual sites. You’ll receive access to different site and hosting features based on your Site plan.

An individual field within a Collection. You'll select which fields to display in dynamic Collection lists and Collection pages.

A header is a section at the top of a webpage.

Urgency is a marketing term and psychological trigger that incites potential customers and website visitors to act swiftly.

A radio button is a form element for selecting one option from a predefined set of mutually exclusive choices.

A list is a Webflow element that displays multiple pieces of content in a structured, visually appealing way. The individual elements that make up the list are called list items.

A meta title is an HTML element that defines a web page's title and appears in browser tabs and search snippets on search engine results pages (SERPs) as a clickable headline.

An application context is a set of data that identifies an application’s tasks, where those tasks originate, and how those tasks are configured.

Structured Query Language (SQL) is a programming language that enables storing, retrieving, and manipulating information in a relational database.

A form element that lets website visitors submit data to your form handler.

The span tag is used to style inline-text.

CSS filters apply visual effects to HTML elements and their children using Cascading Style Sheets (CSS).

ALPN stands for Application-Layer Protocol Negotiation. It’s a Transport Layer Security (TLS) extension that aids client and server identification during secure data transfers.

A typography element used for displaying multi-sentence text content.

The inside spacing between the top border of an element and the elements inside it.

A method of lowering the file size of your stylesheet(s) by removing all white space from your CSS files.

A beacon — also called a web beacon or web bug — is an HTML-embedded object that tracks user behavior on a web page.

Hyperlinks are clickable elements that allow users to navigate between web pages, documents, or other types of digital content.

The state displayed when a Collection contains no Collection items, which gives you the opportunity to design for a situation where there's no content to display. Check out the Empty States blog for inspiration.

A slider is an interactive design element for scrolling through images, videos, and other multimedia content.

Inheritance describes a principle where child elements adopt the style properties of parent elements.

All elements on the page targeted by the same selector.

A ligature in typography groups adjacent letters or characters into one glyph.

The way browsers calculate an element's width automatically where Block level elements fill the available space of its parent and Inline elements shrink to the size of its children/content.

An Adobe Fonts API token protects and supports your data from Adobe Fonts with other programs you may be using to personalize your website’s fonts.

Short for Joint Photographic Experts Group, JPEG is a file format that uses lossy compression to maintain manageable file sizes without compromising image quality.

A key, or web key, is a unique identifier that authorizes access to a webpage or service.

Padding is a CSS property defining the space between an element's borders and its content.

AEO (Answer Engine Optimization) is the practice of optimizing content so it gets surfaced and cited by AI answer engines like ChatGPT, Claude, and Gemini, the AI-era counterpart to traditional SEO.

Micro conversions are small but important user actions on a website that contribute to the overall conversion funnel.

The second panel on the right side of the Designer. Here, you can change element-specific settings such as the element ID, Custom attributes, Search index settings, Editor settings, etc. You can learn more about the element settings for a specific element by searching for the element’s name on Webflow University.

A robots.txt file instructs search engine crawlers which webpages and sections they can or can't crawl and index.

A flexbox property that determines the resizing behavior of flex children across viewport sizes. They can shrink, grow, or remain static.

A CSS preprocessor is a program that helps developers write Cascading Style Sheets (CSS) by providing advanced features such as variables, functions, and nesting.

A/B testing compares two different versions of something — like a web page or campaign — to determine which performs better.

Contextual advertising is a form of paid advertising that matches web content with ad intent.

A child element is an element nested within a parent element in a hierarchy.

A section of the Add panel that contains the elements that act as a website's fundamental building blocks (e.g., div block, list, button, etc.).

Encapsulation is an object-oriented programming (OOP) process that combines functions and the data they manipulate into a single entity.

MCP (Model Context Protocol) is an open standard that lets AI agents connect to and act within external tools and data sources, like reading or editing a Webflow site.

A plain text field is an input field for short-form text without formatting or styling.

Password protection is a security feature restricting certain website areas to authorized users, requiring a secret phrase or key to access them.

A lightbox displays content in a popup or modal window on top of a web page’s main content.

Shared Workspace templates are templates made from your own sites. They can help you create sites with similar layouts and increase your efficiency when designing. Your Workspace members will also have access to your shared Workspace template(s).

APIs, or Application Programming Interfaces, are common code protocols that let apps safely exchange data with other apps, software, and hardware.

Scalable Vector Graphics, or SVG, is a file format for displaying scalable vector graphics on the web.

RGB, an acronym for Red, Green, Blue, is a color model that screen displays use to represent various colors.

A flexbox property that lets you customize the alignment behavior of flex children, based on the cross-axis of the flex container. The cross axis is the opposite of the flex-direction property, so if you set the direction to vertical, the cross axis is horizontal. Options include start, center, end, baseline, and stretch.

Left To Right (LTR) describes a text layout that starts from the left and proceeds to the right.

JavaScript is a programming language web developers use to create dynamic interactions and effects for web pages and applications.

A Domain-Specific Language (DSL) is computer script that solves software problems in a specific domain.

By default, Collection lists display all items in a Collection, but you can add limits to control the number of Collection items that display.