How to Create Circles in CSS?

Pre-requisites

Before you can create circles in CSS, you should have a basic understanding of the following prerequisites:

• HTML Structure:
  Familiarity with HTML is crucial, as you'll need to create the elements (e.g., divs, buttons, images) in which you want to display circles.
• CSS Fundamentals:
  You should have a grasp of CSS basics, including selectors, properties, and values, to style and format your HTML elements.
• Box Model:
  Understanding how the CSS box model works is essential, as it affects an element's dimensions and spacing, which can impact the appearance of circles.
• Width and Height Properties:
  Knowledge of how to set the width and height properties for HTML elements, whether in pixels or other units, is necessary to define the size of your circles.
• Border Properties:
  You'll need to know how to use CSS border properties, such as "border-radius", to create rounded shapes like circles.
• Units of Measurement:
  Familiarity with units like pixels (%), ems, and rems is helpful for specifying dimensions and positioning elements accurately.
• Basic Text and Content Styling:
  Understanding how to style text and content within your circles, such as colors, fonts, and alignment, can enhance the overall design.
• Browser Developer Tools:
  Proficiency in using browser developer tools for debugging and inspecting your CSS code is beneficial for fine-tuning circle designs and troubleshooting issues.
• Once you have these prerequisites in place, you'll be well-prepared to create circles and other shapes in CSS to enhance your web designs.

How to Create Circles in CSS?

Create HTML

To create a circle in CSS, you'll first need an HTML element to apply your CSS styles. Typically, you can use a <div> element for this purpose. Here's the HTML part with an explanation:

• Basic Circle using CSS border-radius Property:
  This creates a basic circle using CSS border-radius. The circle-basic class is used for styling.
• Circle with Text using CSS border-radius Property:
  This creates a circle with text inside it using CSS border-radius. The circle-text class is used for styling.
• Circle with Text using <span> Element:
  This is another way to create a circle with text inside by using a <span> element. The circle-with-text class is used for styling.
• Responsive Circle using Percentage Units:
  This demonstrates a responsive circle using percentage units for width and padding. The circle-responsive class is used for styling.
• SVG Circle using SVG <circle> Element:
  An SVG circle is created using the <circle> element inside an <svg> element. It's styled directly in the HTML.
• Canvas Circle using HTML <canvas> Element:
  A canvas circle is drawn using JavaScript inside the <canvas> element. The <script> section provides the JavaScript code for drawing the circle.

Add CSS

Using CSS border-radius Property:

• width and height define the dimensions of the circle.
• background-color sets the circle's background color.
• border-radius: 50%; creates a circular shape by making the border-radius equal to half of the width and height.
• text-align and line-height center the text vertically and horizontally.
• color sets the text color.
• font-size determines the font size.
• margin-bottom adds space between circles if you have multiple.

Using <div> Elements (Circle with Text inside):

• This CSS is similar to the basic circle, but with adjusted dimensions to accommodate text inside.
• width and height are increased for a larger circle.
• background-color sets the circle's background color.
• border-radius: 50%; creates a circular shape.
• text-align and line-height center the text vertically and horizontally.
• color sets the text color.
• font-size determines the font size.

Creating a Responsive Circle (Using Percentage Units):

• width: 50%; and padding-top: 50%; create a responsive square container for the circle.
• background-color sets the circle's background color.
• border-radius: 50%; creates a circular shape.
• text-align and line-height center the text vertically and horizontally.
• color sets the text color.
• font size determines the font size.

Using SVG <circle> Element (SVG Circle)

• cx and cy:
  Define the center coordinates of the circle.
• r:
  Specifies the radius of the circle.
• fill:
  Sets the fill color of the circle.
• stroke:
  Determines the color of the circle's outline.
• stroke-width:
  Sets the width of the outline.
• opacity:
  Adjusts the transparency of the circle.

Using HTML <canvas> Element (Canvas Circle):

The CSS code provides an optional border around the <canvas> element, adding a visual distinction to the canvas on the webpage. This border is useful for styling purposes but doesn't directly affect the drawing of the circle.