th - This attribute is used to define a recommended cell width.  Additional space can be added with the cellspacing and cellpadding properties and the width of the <col> element can also create extra width. But, if a column's width is too narrow to show a particular cell properly, it will be widened when displayed. Usage Note: Do not use this attribute in the latest standard: use the CSS width property instead. object - The width of the display resource, in CSS pixels.  -- (Absolute values only.  NO percentages) col, colgroup - This attribute specifies a default width for each column in the current column group. In addition to the standard pixel and percentage values, this attribute might take the special form 0/, which means that the width of each column in the group should be the minimum width necessary to hold the column's contents. Relative widths such as 0.5/ also can be used. video - The width of the video's display area, in CSS pixels.  -- (Absolute values only.  NO percentages) td - This attribute is used to define a recommended cell width.  Properties cellspacing and cellpadding may add additional space, and element <col> width may also have some effect. In general, if a column's width is too narrow to show a particular cell properly, it, and thus the cells in it, may be widened when displayed. Note: Do not use this attribute in the latest standard: instead set the CSS width property. iframe - Indicates the width of the frame HTML5 in CSS pixels, or HTML 4.01 in pixels or as a percentage. canvas - The width of the coordinate space in CSS pixels. Defaults to 300. pre - Contains the preferred count of characters that a line should have. Though technically still implemented, this attribute has no visual effect; to achieve such an effect, use CSS width instead. hr - Sets the length of the rule on the page through a pixel or percentage value. img - The intrinsic width of the image in pixels. In HTML 4, either a percentage or pixels were acceptable values. In HTML5, however, only pixels are acceptable. table - This attribute defines the width of the table. The width may be defined by pixels or a percentage value. A percentage value will be defined by the width of the container in which the table is placed. Usage Note: Do not use this attribute, as it has been deprecated. The rules should be defined and styled using CSS. Use the width property instead. embed - The displayed width of the resource, in CSS pixels.  -- (Absolute values only.  NO percentages) input - If the value of the type attribute is image, this attribute defines the width of the image displayed for the button.