Home > Web Front-end > CSS Tutorial > Draw a concentric circle using css3

Draw a concentric circle using css3

php中世界最好的语言
Release: 2018-03-21 17:06:20
Original
2398 people have browsed it

This time I will bring you how to use css3 to draw concentric circles and what are the precautions. Here is a practical case. Let’s take a look.

Basic idea

First you have to draw three circles, then how do the three circles overlap? This has to be controlled by -

margin.

<p id="tongxin">
    <p id=&#39;t1&#39;></p>
    <p id="t2"></p>
    <p id="t3"></p>
</p>
Copy after login
css

        #t1 {
            float:left;
            width:150px;
            height:150px;
            background: pink;
            border-radius:75px ;
        }
        #t2 {    
            float:left;
            width:100px;
            height:100px;
            margin-left:-125px;/*move to left 125px*/
            margin-top:25px;/* move to bottom 25px*/
            background: green;
            border-radius: 50px;
        }
        #t3 {
            float:left;
            width:50px;
            height:50px;
            margin-left:-100px;/*move left 100px*/
            margin-top:50px;
            background: yellow;
            border-radius: 25px;
        }
Copy after login

Result


Code Analysis

How to understand the above code? For example, margin-left:-125px in t2. margin-top:25px; Look at the picture below


-125 means moving 125px to the left, and 25 means moving 25px down. Why is it moved 125px to the left? This depends on how well you studied mathematics in junior high school. The distance between the centers of two circles. The radius of the large circle is 75px, and the radius of the middle circle is 50px. In other words, the distance between the centers of the big circle and the small circle is 125px.

The vertical movement of 25px is because the vertical center distance of the circle is 25px.

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

Detailed explanation of the use of Selector in CSS

Detailed explanation of the special usage skills of CSS margin

Optimize the styles of radio buttons and check boxes

The underlying rules of CSS priority calculation

The above is the detailed content of Draw a concentric circle using css3. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template