This is a CSS tutorial series to draw concentric circles using pure CSS. Here Web Developer Mr Choudhury shown with free source code examples, the easiest ways to draw CSS circles & concentric circles with the help of pure CSS. Here DIV represent each circle having border-radius:50%;.
About this tutorial & author : Also Mr. Choudhury shown the formula, and he described and explained here developed by the renowned CSS layout expert and css template designer for web page layouts.
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What is “position:absolute” in CSS ? To learn absolute positioning CSS property you must understand block level & inline elements, normal flow concept of CSS. You must know normal flow first, then learn absolute position concept.
Box model, Normal Flow > Absolute positioning
Absolute Positioning Explained
- An absolutely positioned element is removed from the normal flow. This positioning scheme applies to any element that has its position porperty absolute or fixed.
- This means you can put it anywhere, and it won’t affect or be affected by any other element in the flow.
- Normally absolutely positioned elements are positioned by the top and left property assigned to them.
- This top and left works with respect to the container block of this absolutely positioned element. This top and left are called offset positions.
- Absolute positioning always works w.r.t the container block of this absolutely positioned element.
- Absolute elements create a new coordinate system for child elements inside them.
- This is an exellent property of ABSOLUTE POSITIONING : Use all four offset properties (TOP, LEFT, BOTTOM, RIGHT), and you can stretch an element without defining any width or height—it’s bound only by its parent element or the document itself if there is no container.
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Know the Box Model
First you need to understand the CSS box model if you are in web design field, this is the first thing you need to learn web designing. When we say a <p> tag (Paragraph element) or DIV tag (DIV element) or Hyperlink (anchor tag <a>), then we always refer to these HTML elements’ box model.
Continue reading Box model, inline & block elements & normal flow