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Controlling Text Box Width Within Containers
In web design, it is often desirable to have text boxes that span the entire width of their containers. However, a common issue arises when the text box's width is set to 100% using CSS. This can cause the text box to expand beyond its container due to default margins, borders, and padding.
To overcome this challenge, one can utilize the CSS3 property box-sizing: border-box. This property redefines the concept of 'width' to include the external padding and border.
<code class="css">input.wide { width: 100%; box-sizing: border-box; -moz-box-sizing: border-box; -webkit-box-sizing: border-box; }</code>
This modern approach offers precise control over text box width, ensuring they fit snugly within their containers.
Alternatively, for browsers with limited CSS3 support, one can resort to manually adjusting the padding-right property of the enclosing element. This involves estimating the extra space occupied by borders and padding in pixels. For example, in Internet Explorer versions below 8, this adjustment typically involves adding 6px of padding.
By leveraging these techniques, web designers can effectively control the width of text boxes, allowing them to fill their containers without spilling over.
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