Introduction to CSS Box Sizing
Box sizing property enables us to include the padding and the border in the total width and height of an element. CSS Styles also have a different set of properties to use web pages with colorful presentations for their business. Each has some different set of attributes behaviors and styles. CSS Box Sizing is one of the properties which includes padding and border styles of the elements. It will helpful for including the CSS Style elements total width and height which is to be calculated on the front end Web Pages.
Syntax:
In CSS it has their own syntax for each property of the elements which identifies the elements in CSS Styles for presentations Segments.
<html>
<head>
<style>
.elements{
box-sizing:values;
}
</style>
</head>
</html>
The above code is the basic syntax which we use for boxing concepts in CSS styles. In that, we have used the box-sizing attribute for aligning the page contents in the box model the values are like “border-box, rectangle,content-box” etc, we can use any of the boxing values which depends upon the user and project requirements. We have some user-customized boxes and the values may also be included.
How is Box Sizing done in CSS?
Generally, box-sizing property includes the contents and the sizes of the boxes like total width and height of the box which will specify that in style attribute by default and it will assign the values like element width and height is to be a content-box model. Borders or padding values of any web element depend upon the web page presentation, both border and padding are added to the element width and height and are specified with the size of the content box on the user’s screen. When we add the values in the attributes we will see all the above things and then is to be set with height and width values aligned with the web pages. If we have a box style in CSS it will contain four sides, it will set the width of the box and also declare the border either top or right or left or bottom borders and padding includes options like top, bottom, left and right.
CSS box sizing property is generally used for style elements behaviors. Content-box model helps to satisfy the default conditions of the CSS styles and will set some values in width of the content box it will allow and for applicable to all the html contents which we have assigned in the boxes and value will be rendered with the final width. If we use the Border-box model, the browser will take any values which we declared in the border and paddings in the style tag. If we set the element width value in the border-box model it will be applicable for all the borders and padding which they include in the box styles and also the box will shrink some values with extra widths. It will be typically useful for the HTML elements size to make it easier. It is more often to set the box-sizing to border-box model for layout elements. It will help to deal with the HTML element sizes and also it eliminates some number of pitfalls to stumble time on laying out the HTML contents. We can assign the position values in the style tag it will be either relative or absolute box-sizing like content-box will allow the boxing HTML element content values related and also some independent set of the HTML elements like borders and padding element values with sizes also it includes.
Content-box model takes the default value as already specified in the CSS standard rule. It also includes element width and height of the web page contents but it does not include the padding borders and margins styles but border-box model element width and height will include the padding and borders of the properties it will not be applicable for margin styles. The padding and borders values will be inside of the border-box model.

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Examples of CSS Box Sizing
Following are the examples are given below.
Example #1
Code:
<html>
<head>
<style>
.sample {
width: 303px;
height: 104px;
border: 2px solid green;
}
.sample1 {
width: 402px;
height: 106px;
padding: 54px;
border: 3px solid blue;
}
</style>
</head>
<div class="sample">Welcome to My Domain</div>
<br>
<div class="sample1">Welcome to My Domain</div>
</html>
Output:
Example #2
Code:
<html>
<head>
<style>
.sample {
margin: 1 4 3rem 6;
padding: 3rem;
background: blue;
}
div[class*="sample1"]
{
width: 303px;
padding: 23px;
background: green;
color: red;
border: 13px solid blue;
background-clip: content-box;
text-indent: 22px;
}
.content-sample1{
box-sizing: content-box;
}
.padding-sample1{
box-sizing: content-box;
}
.border-sample1{
box-sizing: content-box;
}
</style>
</head>
<section class="sample">
<div class="sample1">Welcome to My Domain</div>
</section>
<section class="sample">
<div class="sample1">Welcome to My Domain</div>
</section>
<section class="sample">
<div class="sample1">Welcome to My Domain</div>
</section>
</html>
Output:
Example #3
Code:
<html>
<head>
<style>
.sample {
margin: 1 4 3rem 6;
padding: 3%;
background: blue;
}
div[class*="pictures"]
{
width: 303%;
padding-bottom: 23px;
background: green;
color: red;
border: 13px solid blue;
background-clip: content-box;
text-indent: 22px;
position: relative;
}
.pictures
{
width: 14%;
position: absolute;
}
</style>
</head>
<section class="sample">
<img class="pictures" src="download.jpg">Welcome to My Domain
</section>
<section class="sample">
<img class="pictures" src="download.jpg">Welcome to My Domain
</section>
</html>
Output:
The above examples describe detailings of the box-sizing properties in CSS styles, the first example shows the basic CSS box-sizing Property the second example shows three types of boxes like content-boxes padding and border-boxes and the image is added with the content-box model.
Conclusion
CSS Style properties are used for all the web pages because it designs the web sites more colorful and it has more intuitive for including properties like box-sizing, these type of properties will support all the current versions of the browsers in few browsers like Firefox which support only padding-box property of the CSS. For Internet Explorer, both width and height values of the CSS elements are not recognized in the box-sizing property.
Recommended Articles
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