css3 simple graphic drawing tutorial

css is Cascading Style Sheets (English full name: Cascading Style Sheets), a computer language used to express file styles such as HTML (an application of Standard Generalized Markup Language) or XML (a subset of Standard Generalized Markup Language). . CSS can not only statically modify web pages, but can also cooperate with various scripting languages ​​to dynamically format various elements of web pages. CSS can perform pixel-level precise control over the layout of element positions in web pages, supports almost all font size styles, and has the ability to edit web page object and model styles.

Here are a few small cases to teach you how to draw some graphics with css:

<style>
    #triangle {        width: 0;        border-style: solid;        border-width: 50px 50px 50px 50px;        border-color: red blue orange gray;
    }</style><div id="triangle"></div>

The effect is as shown:

<style>
    #triangle2 {        width: 0;        border-style: solid;        border-width: 50px 50px 50px 50px;        border-color: red red grey grey;
    }</style><div id="triangle2"></div>

The effect As shown in the picture:

<style>
    #triangle3 {        width: 0;        border-top: 60px solid transparent;        border-right: 100px solid transparent;        border-bottom: 80px solid red;
    }</style><div id="triangle3"></div>

The effect is as shown in the picture:

<style>
    #triangle4 {        width: 0;        border-left: 50px solid transparent;        border-right: 50px solid transparent;        border-bottom: 100px solid red;
    }</style><div id="triangle4"></div>

The effect is as shown in the picture:

Draw a heart

<style>
    #heart {        float: left;        width: 100px;        height: 90px;        position: relative;
    }    #heart:before,#heart:after {        position: absolute;        top: 0;        content: &#39;&#39;;        width: 50px;        height: 80px;        background: red;        border-radius: 25px 25px 0 0;
    }    #heart:before {        left: 14px;        transform: rotate(-45deg);
    }    #heart:after {        left: 36px;        transform: rotate(45deg);
    }</style><div id="heart"></div>

The effect is as shown:

##Draw an arrow

<style>
    #arrow {        margin-top: 105px;        float: left;        width: 0;        border-left: 30px solid transparent;        border-right: 30px solid transparent;        border-top: 60px solid red;        position: relative;
    }    #arrow:before,#arrow:after {        position: absolute;        content: &#39;&#39;;
    }    #arrow:before {        border-left: 30px solid transparent;        border-right: 30px solid transparent;        border-top: 20px solid #fff;        left: -30px;        top: -61px;
    }    #arrow:after {        height: 120px;        border-left: 2px solid red;        border-right: 2px solid red;        left: -2px;        top: -161px;
    }</style><div id="arrow"></div>

The effect is as shown:

Draw a five-pointed star

<style>
    #star-five {        margin: 75px 0 55px 0;        float: left;        width: 0;        height: 0;        border-top: 66px solid red;        border-left: 100px solid transparent;        border-right: 100px solid transparent;        position: relative;
    }    #star-five:before,#star-five:after {        position: absolute;        content: &#39;&#39;;        border-top: 66px solid red;        border-left: 100px solid transparent;        border-right: 100px solid transparent;        top: -66px;        left: -100px;
    }    #star-five:before {        transform: rotate(-72deg);
    }    #star-five:after {        transform: rotate(72deg);
    }</style><div id="star-five"></div>

The effect is as shown:

Draw a bubble box/tips Frame

<style>
    #prompt {        float: left;        width: 200px;        height: 100px;        margin: 20px 0 40px;        border-radius: 20px;        background: #669;        position: relative;
    }    #prompt:after {        position: absolute;        content: "";        width: 50px;        height: 120px;        border: 0 solid transparent;        border-right: 30px solid #669;        border-radius: 0 0 50px 0;        top: 0;        left: 0;
    }</style><div id="prompt"></div>

The effect is as shown:

Drawing balloon

<style>
   #balloon {        float: left;        width: 160px;        height: 160px;        background: #faf9f9;      
     border-radius: 160px 160px 64px 160px;        transform: rotate(45deg);      
       box-shadow: 0 0 100px 0 rgba(243,98,122,1) inset, 20px 20px 20px rgba(243,98,122,0.3);        position: relative;
   }    #balloon:after {        position: absolute;        content: &#39;&#39;;     
      border: 8px solid transparent;        border-right-color: rgba(243,98,122,0.88);    
          transform: rotate(45deg);        border-radius: 16px;     
             bottom: -2px;        right: -2px;
   }</style><div id="balloon"></div>

The effect is as shown:

Drawing Yin and Yang Bagua

<style>
    #yin-yang {            float: left;            width: 48px;            height: 96px;            background-color: #fff;            border-style: solid;            border-color: #000;            border-width: 2px 50px 2px 2px;            border-radius: 50%;            -webkit-animation: Rotate 6s linear infinite; /*旋转*/
            position: relative;
        }        #yin-yang:before,#yin-yang:after {            position: absolute;            content: &#39;&#39;;
        }        #yin-yang:before {            width: 12px;            height: 12px;            background: #fff;            border: 18px solid #000;            border-radius: 50%;            top: 0;            left: 50%;
        }        #yin-yang:after {            width: 12px;            height: 12px;            background: #000;            border: 18px solid #fff;            border-radius: 50%;            top: 50%;            left: 50%;
        }
        @-webkit-keyframes Rotate {
            0%{transform: rotate(360deg)}
            100%{transform: rotate(0deg)}
        }
        @keyframes Rotate {
            0%{transform: rotate(360deg)}
            100%{transform: rotate(0deg)}
        }</style><div id="yin-yang"></div>

The effect is as shown:

CSS provides a style description for the HTML markup language and defines the elements display mode. CSS is a breakthrough in the field of web design. It can be used to modify a small style to update all page elements related to it. See the little graphics drawn above. Isn’t it amazing? These tutorials are very simple and suitable for beginners to learn.

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