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HTML attributes are often needed for various reasons. An attribute takes the basic form attribute="value", where combining multiple repeats this with attribute="value" attribute2="value2". Important points to realize: All table markup, except table end (|}), can have attributes added. Table and row markup ({| and |-) don't
A table is an arrangement of columns and rows that organizes and positions data or images. Tables can be created on Wikipedia pages using special wikitext syntax, and many different styles and tricks can be used to customise them.
However, for decades, HTML has had only limited options for easy alignment (one: <center>, which is now deprecated). A method for undenting the first word of a paragraph is to put the paragraph into a text-table, where the first word (or syllable) is (alone) in column 1, while the other text is in column 2. Wikicode
There are several advanced scrolling tables (with row and column headers that stay visible and sticky while scrolling) in COVID-19 pandemic by country and territory and in COVID-19 pandemic deaths. The scrolling and sticky headers work in cell phones, too. Widest scrolling tables are on top of the list below.
To clearly define relationships and avoid accessibility issues, use ! scope="colgroup" colspan="2" | when a column header spans two columns and ! scope="rowgroup" rowspan="2" | when a row header spans two rows, adjusting the number if spanning more. [WCAG 4]
The two most commonly used classes are "wikitable" and "wikitable sortable"; the latter allows the reader to sort the table by clicking on the header cell of any column. |+ caption Required for accessibility purposes on data tables, and placed only between the table start and the first table row. ! header cell Optional.
This is different from tables on webpages outside Wikipedia. Overall table widths (as opposed to max-widths) do not narrow on most pages outside Wikipedia. See max-width outside Wikipedia: CSS Height, Width and Max-width. Experiment with em and other width settings on another page outside Wikipedia: HTML Table Sizes.
The two most commonly used classes are "wikitable" and "wikitable sortable"; the latter allows the reader to sort the table by clicking on the header cell of any column. caption Required for accessibility purposes on data tables, and placed only between the table start and the first table row.