A block of text is a stack of line boxes. In the case of left, right and center, this property specifies how the inline boxes within each line box align with respect to the line box's left and right sides; alignment is not with respect to the viewport. In the case of justify, this property specifies that the inline boxes are to be made flush with both sides of the block. The actual justification algorithm used depends on the user-agent and the language/script of the text. ]]> Used to select and style unvisited links.

User agents commonly display unvisited links differently from previously visited ones. Selectors provides pseudo-classes to distinguish them:

  • The :link pseudo-class applies to links that have not yet been visited.
  • The : pseudo-class applies once the link has been visited by the user.

After some amount of time, user agents may choose to return a visited link to the (unvisited) ‘:link’ state.

The two states are mutually exclusive.

]]> The :visited pseudo-class applies to links the user has visited

User agents commonly display unvisited links differently from previously visited ones. Selectors provides pseudo-classes to distinguish them:

  • The : pseudo-class applies to links that have not yet been visited.
  • The :visited pseudo-class applies once the link has been visited by the user.

After some amount of time, user agents may choose to return a visited link to the (unvisited) ‘:’ state.

The two states are mutually exclusive.

]]> :active pseudo-class applies while an element is being activated by the user. For example, between the times the user presses the mouse button and releases it. On systems with more than one mouse button, :active applies only to the primary or primary activation button (typically the "left" mouse button), and any aliases thereof.]]>