CSS is one of the most powerful and versatile tools for web design that allows you to give a specific style to each element on a webpage. One of the simple and fundamental topics in CSS is controlling and designing the borders of elements, or simply Borders. This feature allows you to apply attractive visual separation to your elements and, by using them, you can create distinct and unique designs between different elements on the page.
Using Borders in CSS allows you to easily define the width, color, and type of a border. For example, you can set a border to be solid, dashed, dotted, or even more than that for your elements. These features can make your design seem more professional and accessible, enhancing user experience on your website.
Borders in CSS allow you to create better distinction and separation between different sections of the webpage. For example, you can add a beautiful green line for titles, give the content boxes thicker borders or contrasting colors, or even create appealing transitions between elements by changing their borders.
For designing borders in CSS, you can use several properties such as border-width, border-style, and border-color to completely customize the appearance of the borders and change the overall layout of your page.
Now that we are familiar with the importance and functionality of CSS Borders, let’s evaluate a simple example of using them.
Example of Using CSS Borders
<!DOCTYPE html>
<html lang="fa">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>CSS Borders Example</title>
<style>
.border-box {
border-width: 2px;
border-style: solid;
border-color: blue;
padding: 10px;
margin: 5px;
}
</style>
</head>
<body>
<div class="border-box">
This is a box with a blue border.
</div>
</body>
</html>
Line-by-Line Code Explanation
<!DOCTYPE html>
This declares the document as an HTML page.
<html lang="fa">
This starts the HTML document and specifies the page language as Persian.
<head>
This starts the head section of the document that includes metadata and styles.
<meta charset="UTF-8">
This sets the character encoding of the page to UTF-8 which is used by most websites.
<meta name="viewport" content="width=device-width, initial-scale=1.0">
This makes the page responsive and adjustable to different device sizes.
<title>CSS Borders Example</title>
This sets the page title that appears on the browser tab.
<style>
This starts the section for internal CSS styles for the page.
.border-box
This defines a class for HTML elements with the name border-box.
border-width: 2px;
This sets the border thickness to 2 pixels.
border-style: solid;
This sets the type of border to solid.
border-color: blue;
This sets the border color to blue.
padding: 10px;
This adds 10 pixels of padding inside the box.
margin: 5px;
This adds 5 pixels of margin outside the box.
</style>
This ends the internal style section.
</head>
This ends the head section.
<body>
This starts the body section of the document where the content is displayed.
<div class="border-box">
This creates a div with the class border-box to show the styled border.
This is a box with a blue border.
Content that appears inside the box.
</div>
This ends the box definition.
</body>
This ends the body section of the page.
</html>
This ends the HTML document.