My dilemma involves an HTML input field.
The input currently has padding: 5px 10px;, but I need it to occupy 100% of its parent div's width (which is fluid).
If I try using width: 100%;, the input ends up being wider than intended due to the padding, causing it to be 100% + 20px. How can I resolve this issue?
box-sizing: border-box can quickly resolve this issue:
This approach is compatible with all current browsers, including IE8+.
For a demonstration, visit: http://jsfiddle.net/thirtydot/QkmSk/301/
.content {
width: 100%;
box-sizing: border-box;
}
In today's modern browsers, the vendor-prefixed versions (-webkit-box-sizing, etc.) are unnecessary.
This is the reason why CSS includes the box-sizing property.
I have made adjustments to your example so that it now functions properly in Safari, Chrome, Firefox, and Opera. Take a look: http://jsfiddle.net/mathias/Bupr3/ All I did was add this:
input {
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}
Unfortunately, older browsers like IE7 do not support this feature. If you require a solution that works with outdated Internet Explorer versions, please refer to the other responses.
Consider using percentages for padding and avoiding it in the width property:
padding: 8%; width: 85%;
There is a way to achieve this without relying on box-sizing or unclear solutions like width~=99%.
Check out the demo on jsFiddle:
padding and bordermargin to input = border-width + horizontal paddingpadding to input's wrapper equal to the margin from the previous stepHTML structure:
<div class="input_wrap">
<input type="text" />
</div>
CSS Styles:
div {
padding: 6px 10px; /* mimics normal `div` box-sizing */
}
input {
width: 100%; /* expands to container's width */
padding: 5px 10px;
border: none;
margin: 0 -10px; /* negative margin = border-width + horizontal padding */
}
Learn to implement the css calc() function.
Such a straightforward and fantastic technique.
input {
width: -moz-calc(100% - 15px);
width: -webkit-calc(100% - 15px);
width: calc(100% - 15px);
}
Referencing this helpful discussion on implementing calc(): Div width 100% minus fixed amount of pixels
Contributed by webvitaly ()
Originally published at:
Transferred this valuable information here, ensuring it doesn't go unnoticed within the other content.
When I find myself inside a container with 15px padding, my go-to code for the inner part is:
width:auto;
right:15px;
left:15px;
This allows the inner part to stretch to its necessary width while accounting for the 15px padding on either side.
Check out the advice provided by codeontrack.com, which offers great solutions:
Instead of specifying the width of the div as 100%, consider setting it to auto and ensure that the
<div>is set to display: block (which is the default for<div>).
To enhance the layout, consider implementing some positioning techniques. One approach is to enclose the input field within a div element styled with position: relative and a fixed height. Then, apply
position: absolute; left: 0; right: 0;Relocate the padding of the input box to a surrounding container.
<style>
div.wrapper{ background: red; padding: 10px; }
div.inner { border: 1px solid #888; padding: 5px 10px; background: white; }
input { width: 100%; border: none }
</style>
<div class="wrapper">
<div class="inner">
<input/>
</div>
</div>
Check out the demonstration here: http://jsfiddle.net/L7wYD/1/
It's possible that browser behavior has evolved since the last time this question was addressed. However, the method below has consistently proven effective for achieving this:
width: auto;
left: 0;
right: 0;
By applying these styles, you have the flexibility to adjust margins and padding without causing the element to exceed its available width.
This approach bears resemblance to @andology's solution from earlier times, but by setting both left and right to 0, you can freely manipulate margin and/or padding. As a result, this remains my go-to div structure.
It's important to grasp the distinction between using width:auto; and width:100%; in CSS. When using width:auto;, the browser will automatically calculate the width to perfectly fit within the specific given width of the containing div, including any padding. On the other hand, when using width:100%, the element will expand to take up the entire width and also add any specified padding.
Have you considered placing it within a container that is styled as follows:
{
width:100%;
border: 10px solid transparent;
}
Here is a suggestion:
max-width: 100%;
box-sizing: border-box;
After experimenting with the CSS rule
margin:15px;padding:10px 0 15px 23px;width:100%To fix this issue, I decided to switch from using width:100% to width:auto. The updated code now reads as follows:
margin:15px;padding:10px 0 15px 23px;width:autoIf you want to achieve this effect, try the following CSS:
width: auto;
padding: 20px;
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