<p>When calling <code>.width("value")</code>, the value can be either a string (number and unit) or a number. If only a number is provided for the value, jQuery assumes a pixel unit. If a string is provided, however, any valid CSS measurement may be used for the width (such as <code>100px</code>, <code>50%</code>, or <code>auto</code>). Note that in modern browsers, the CSS width property does not include padding, border, or margin, unless the <code>box-sizing</code> CSS property is used.</p>
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