HTML and CSS Reference
<progress> . . . </progress>
Not in HTML 4.01 . Represents the completion progress of a task, such as downloading. The
value measuring task completion can be provided by a script and inserted as content of the
progress element or be provided with the value attribute. The progress element may be
used even if the maximum value is not known, for example, to indicate a task waiting for a
remote host to respond.
Flow content, phrasing content, labelable element, palpable content
Where phrasing content is expected
Phrasing content, but may not contain progress elements
HTML5 Global Attributes
Indicates a measure of the total work the task requires. The default is 1.