如何在css中绘制特殊图形

如何在CSS中绘制特殊图形？相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。

一、三角形

border边框设置

代码：

width: 300px;height: 300px;background: red;border: 40px solid black;border-left-color: blue;border-bottom-color: yellow;border-right-color: pink;border-top-color: #008800;

花特殊图形的时候需要将宽高设置成0

效果：

代码：

width: 0;height: 0;background: transparent;border: 40px solid black;border-left-color: blue;border-bottom-color: yellow;border-right-color: pink;border-top-color: #008800;

1、等腰三角形：将其他的边的border设置成透明

代码：

width:0;height: 0;background: transparent;border: 40px solid black;border-left-color: transparent;border-bottom-color: yellow;border-right-color: transparent;border-top-color: transparent;

2、直角三角形

代码：先写出个完整的div,再使用border-***-width：0；来截取三角形

border-top-width/border-bottom-width:0=》就是在中间横着劈开一道，保留上边或者下边

border-left-width/border-right-width:0=》就是在中间竖着劈开一道，保留左边或者右边

.rightAngle{    width: 0;    height: 0;    background: transparent;    border: 40px solid black;    border-left-color: blue;    border-bottom-color: yellow;    border-right-color: pink;    border-top-color: #008800;    border-top-width: 0;    border-left-width: 0;    border-right-color: transparent;}

3、梯形

彩带图形：

代码：

width: 300px;height: 0;background: transparent;border: 40px solid #008800;border-left-color: transparent;border-bottom-color: yellow;border-right-color: transparent;border-top-color: #008800;

梯形：

代码：将上面彩带图形的宽度减少，然后将上面的梯形设置为透明

width: 100px;height: 0;background: transparent;border: 40px solid #008800;border-left-color: transparent;border-bottom-color: #008800;border-right-color: transparent;border-top-color: transparent;

总结：通过设置长度和高度，以及设置border的透明度来拼凑成想要的图形 4、圆形

4、图形：

代码： 使用border-radius:50%;

.circle{    width: 100px;    height: 100px;    border: 0;    border-radius: 50%;    background-color: orange;}

5、椭圆

图形：

代码：

.ellipse{    width: 200px;    height: 120px;    background-color: orange;    border-top-left-radius: 50%;    border-top-right-radius: 50%;    border-bottom-left-radius: 50%;    border-bottom-right-radius: 50%;}

总结：

一个display：block的元素设定宽高之后表现为矩形。通过设定border-radius可以得到圆角矩形，圆形和椭圆形。

在使用border-radius时，有几点可能需要注意一下：

• border-radius，可以分别对4个角进行设定。 例如上图：border-top-left-radius: apx bpx;

• border-xxx-xxx-radius的两个值分别代表着椭圆长轴和短轴长度的一半，通常简写的时候例如border-top-left-radius: 10px;(border-top-left-radius:10px 10px;) 表明长轴和短轴的长度均为20px，也就是半径为10px的圆形（圆角部分）。

• 当使用百分比数值时，a 相对于width， b相对于height 6、特殊图形

（1）斜边三角形

图形：

代码：先画个等边三角形，然后再转换角度

.beveledTriangle{    margin: 50px;    width: 0;    height: 0;    border: 20px solid #2b81af;    border-top-width: 40px;    border-top-color:transparent;    border-bottom-width: 40px;    border-bottom-color: transparent;    border-left-width: 0;    border-right-color: #008800;    border-right-width: 25px;    transfORM-origin:center center;    transform:rotateY(-180deg) rotate(-44deg)  ;}

（2）绘制一条“小尾巴”

图形：

代码：

.tail{    margin: 50px;    width: 100px;    height: 70px;    border-top-right-radius: 70px 70px;    border-right:6px solid #000000;}

总结：当对一个角应用圆角样式， 如果这个角相邻的两个boeder一个有定义而一个无定义 ，那么绘制的结果就是有粗到细的“小尾巴了”

7、绘制QQ图案（取自AlloyTeam案例）

图形：

代码：

<a id="qq" href="Http://www.alloyteam.com" target="_blank">    <div class='head'>        <div class='left eye'>            <div class="innerLeftEye">            </div>        </div>        <div class='right eye'>            <div class="innerRightEye">                <div class="fix"></div>            </div>        </div>        <div class='mouthTopContainer'>            <div class='mouthTop'></div>        </div>        <div class="mouthBottomContainer">            <div class="mouthBottom"></div>        </div>        <div class="lipsContainer">            <div class="lips">                <div class="lipShadow left">                </div>                <div class="lipShadow right">                </div>            </div>        </div>    </div>    <div class="body">        <div class="innerWrapper">            <div class="inner">            </div>        </div>        <div class="outterWrapper">            <div class = 'outter'>            </div>        </div>        <div class="scarf">            <div class="scarfShadow">            </div>            <div class="scarfShadowRight">            </div>        </div>        <div class="scarfEnd">            <div class="scarfEndShadow">            </div>        </div>    </div>    <div class="handWrapper">        <div class="leftHandTopContainer">            <div class="leftHandTop">            </div>        </div>        <div class="leftHandBottomContainer">            <div class="leftHandBottom">            </div>        </div>        <div class="rightHandTopContainer">            <div class="rightHandTop">            </div>        </div>        <div class="rightHandBottomContainer">            <div class="rightHandBottom">            </div>        </div>    </div>    <div class='footWrapper'>        <div class="leftFootTopWrapper">            <div class="leftFootTop">            </div>        </div>        <div class="leftFootBottomWrapper">            <div class="leftFootBottom">            </div>        </div>        <div class='toe left'></div>        <div class="rightFootTopWrapper">            <div class="rightFootTop">            </div>        </div>        <div class="rightFootBottomWrapper">            <div class="rightFootBottom">            </div>        </div>        <div class='toe right'></div>    </div></a><style>    body{        margin: 0;        padding:0;        font: 12px Tahoma, arial, sans-serif;    }    #mask {        position: absolute;        opacity: 0.2;        top:0;        left:0;    }    header{        font-family: 'SeGoe UI Light','Segoe UI','Microsoft Jhenghei','寰蒋闆呴粦',sans-serif;        color: #666;        font-size: 50px;        text-align: center;        margin-top:50px;    }    .team {        font-size: 0.6em;    }    .team a{        color:#5FB7E9;        text-decoration: none;    }    .team a:hover{        color:#4B9BC9;    }        #qq {        width: 420px;        height: 400px;        margin: 0 auto;        margin-top: 30px;        position: relative;        display:block;    }    .head{        position: absolute;        top:18px;        left: 96px;        width: 234px;        height: 185px;        border: 1px solid #000;        border-top-left-radius: 117px 117px;        border-top-right-radius: 117px 117px;        border-bottom-left-radius: 117px 68px;        border-bottom-right-radius: 117px 68px;        z-index:10;        background: #000;    }    .eye{        width: 44px;        height: 66px;        border:1px solid #000;        border-radius: 50% 50%;        position: absolute;        background: #fff;    }    .left.eye{        left:62px;        top:50px;    }    .right.eye{        left:123px;        top:50px;    }    .innerLeftEye{        position: absolute;        top: 20px;        left: 20px;        width: 18px;        height: 24px;        border-radius: 50%;        border: 1px solid #000;        background: #000;    }    .innerLeftEye:after{        content: "";        position: absolute;        width: 6px;        height: 8px;        background: white;        z-index: 11;        top: 6px;        left: 9px;        border-radius: 50%;    }    .innerRightEye{        position: absolute;        width: 18px;        height: 20px;        top: 20px;        left: 8px;        border-top-left-radius: 50% 90%;        border-top-right-radius: 50% 90%;        border-bottom-left-radius: 50% 10%;        border-bottom-right-radius: 50% 10%;        background: black;        box-shadow: 0 -1px 2px black;    }    .innerRightEye:after{        content: "";        position: absolute;        width: 10px;        height: 13px;        bottom: -1px;        left: 4px;        border-top-left-radius: 50% 100%;        border-top-right-radius: 35% 80%;        background: white;    }    .fix {        position: absolute;        width: 4px;        height: 4px;        border-radius: 50%;        background: black;        top: 17px;    }    .fix:after{        content: "";        position: absolute;        width: 4px;        height: 4px;        border-radius: 50%;        background: black;        top: 0;        left: 14px;    }    .mouthTopContainer {        position: absolute;        width: 158px;        height: 29px;        z-index: 1;        top: 120px;        left: 39px;        overflow: hidden;    }    .mouthTop{        width: 158px;        height: 34px;        position: absolute;        z-index: 1;        border:1px solid #FFA600;        background: #FFA600;        top: 0;        left: 0;        border-top-left-radius: 45% 34px;        border-top-right-radius: 45% 34px;            }    .mouthBottomContainer {        position: absolute;        width: 158px;        height: 15px;        z-index: 1;        top: 146px;        left: 39px;        overflow: hidden;    }    .mouthBottom{        width: 158px;        height: 24px;        position: absolute;        z-index: 1;        border:1px solid #FFA600;        background: #FFA600;        border-top:none;        top: -4px;        left: 0;        border-bottom-left-radius: 45% 24px;        border-bottom-right-radius: 45% 24px;        background-color: #FFA600;    }    .lips{        border: 1px solid #FFA600;        background: #FFA600;        width: 116px;        height: 24px;        position: absolute;        top: 146px;        left: 60px;        border-top: none;        border-bottom-left-radius: 50% 100%;        border-bottom-right-radius: 50% 100%;    }    .lipShadow {        width: 0px;        height: 0px;        position: absolute;        z-index: 2;        border-top: 20px solid transparent;        border-bottom: 20px solid transparent;        border-right: 8px solid black;        -WEBkit-transform-origin: top right;        -webkit-transform: rotate(-60deg);        -moz-transform-origin: top right;        -moz-transform: rotate(-60deg);        -o-transform-origin: top right;        -o-transform: rotate(-60deg);        transform-origin: top right;        transform: rotate(-60deg);        left: -12px;        top: 4px;    }    .lipShadow.right{        left:114px;        -webkit-transform: rotate(60deg) rotateY(180deg);        -moz-transform: rotate(60deg) rotateY(180deg);        -o-transform: rotate(60deg) rotateY(180deg);        transform: rotate(60deg) rotateY(180deg);    }    .body{        width: 326px;        height: 300px;                top: 135px;        left: 48px;        position: absolute;    }    .scarf {        border: 4px solid #000;        position: absolute;        background: #FB0009;        z-index: 5;        width: 258px;        height: 110px;        top: -2px;        left: 34px;        border-top-left-radius: 30px 34px;        border-top-right-radius: 38px 34px;        border-bottom-left-radius: 50% 76px;        border-bottom-right-radius: 50% 76px;        border-top: none;    }    .scarfShadow {        position: absolute;        border-top: 6px solid #000;        width: 60px;        height: 70px;        top: 0px;        left: 6px;        border-top-left-radius: 90px 120px;        border-top-right-radius: 30px 30px;        -webkit-transform: rotate(-79deg);        -moz-transform: rotate(-79deg);        -o-transform: rotate(-79deg);        transform: rotate(-79deg);    }    .scarfShadowRight {        position: absolute;        border-right: 6px solid black;        width: 100px;        height: 70px;        top: 8px;        left: 143px;        border-bottom-right-radius: 70px 70px;        z-index: 6;    }    .scarfEnd{        position: absolute;        width: 52px;        height: 64px;        z-index: 4;        top: 90px;        border: 3px solid black;        left: 74px;        border-bottom-left-radius: 50% 43%;        border-bottom-right-radius: 15px;        border-top-left-radius: 20% 57%;        background: #FB0009;    }    .scarfEndShadow{        position: absolute;        border-top: 6px solid black;        width: 20px;        height: 20px;        top: 6px;        left: 12px;        border-top-left-radius: 30px 30px;        -webkit-transform-origin: top right;        -moz-transform-origin: top right;        -o-transform-origin: top right;        transform-origin: top right;        z-index: 10;        -webkit-transform: skewX(4deg) scaleY(1.5) rotate(-60deg);        -moz-transform: skewX(4deg) scaleY(1.5) rotate(-60deg);        -o-transform: skewX(4deg) scaleY(1.5) rotate(-60deg);        transform: skewX(4deg) scaleY(1.5) rotate(-60deg);    }    .innerWrapper{        position: absolute;        overflow: hidden;        width: 280px;        height: 200px;        left: 30px;        top: 76px;    }    .inner {        border: 1px solid #000;        width: 218px;        position: absolute;        height: 210px;        border-radius: 50%;        left: 25px;        top: -71px;        z-index: 4;        background: #fff;    }    .outterWrapper{        width: 262px;        left: 32px;        height: 250px;        position: absolute;        top: 54px;        overflow: hidden;    }    .outter{        border: 1px solid #000;        width: 260px;        height: 250px;        border-radius: 125px;        position: absolute;        top: -84px;        z-index: 3;        background: #000;    }    .handWrapper{        position: absolute;        top: 219px;        left: 7px;    }    .leftHandTopContainer{        width: 118px;        height: 26px;        position: absolute;        z-index: 1;        top: 55px;        left: 50px;        -webkit-transform-origin: bottom left;        -webkit-transform: rotate(-70deg);        -moz-transform-origin: bottom left;        -moz-transform: rotate(-70deg);        -o-transform-origin: bottom left;        -o-transform: rotate(-70deg);        transform-origin: bottom left;        transform: rotate(-70deg);        overflow: hidden;    }    .leftHandTop{        width: 128px;        height: 54px;        border: 1px solid #050346;        position: absolute;        border-top-left-radius: 44% 38px;        border-top-right-radius: 56% 33px;        background: #000;    }    .leftHandBottomContainer {        width: 100px;        height: 30px;        position: absolute;        z-index: 1;        top: 78px;        left: 50px;        -webkit-transform-origin: top left;        -webkit-transform: rotate(-70deg);        -moz-transform-origin: top left;        -moz-transform: rotate(-70deg);        -o-transform-origin: top left;        -o-transform: rotate(-70deg);        transform-origin: top left;        transform: rotate(-70deg);        overflow: hidden;    }    .leftHandBottom{        width: 128px;        height: 44px;        border: 1px solid #050346;        background: #000;        border-top: none;        position: absolute;        border-bottom-left-radius: 48% 20px;        border-bottom-right-radius: 52% 23px;        top: -26px;    }    .rightHandTopContainer{        width: 118px;        height: 34px;        position: absolute;        z-index: 3;        top: 47px;        left: 240px;        -webkit-transform-origin: bottom right;        -webkit-transform: rotate(65deg);        -moz-transform-origin: bottom right;        -moz-transform: rotate(65deg);        -o-transform-origin: bottom right;        -o-transform: rotate(65deg);        transform-origin: bottom right;        transform: rotate(65deg);        overflow: hidden;    }    .rightHandTop{        width: 148px;        height: 54px;        border: 1px solid #050346;        position: absolute;        border-top-right-radius: 41% 54px;        border-top-left-radius: 59% 48px;        background: black;        left: -30px;        -webkit-transform: rotateY(-180deg);        -moz-transform: rotateY(-180deg);        -o-transform: rotateY(-180deg);        transform: rotateY(-180deg);    }    .rightHandBottomContainer{        width: 110px;        height: 58px;        position: absolute;        z-index: 1;        top: 81px;        left: 248px;        -webkit-transform-origin: top right;        -webkit-transform: rotate(90deg);        -moz-transform-origin: top right;        -moz-transform: rotate(90deg);        -o-transform-origin: top right;        -o-transform: rotate(90deg);        transform-origin: top right;        transform: rotate(90deg);        overflow: hidden;    }    .rightHandBottom{        width: 68px;        height: 28px;        border: 1px solid #000;        background: black;        border-top: none;        position: absolute;        top: 1px;        left: 38px;        border-bottom-right-radius: 100% 40px;        z-index: 999;    }    .footWrapper{        position: absolute;        top: 292px;        left: 80px;    }    .leftFootTopWrapper {        position: absolute;        width: 130px;        top: 16px;        left: -1px;        height: 37px;        overflow: hidden;        z-index: 2;    }    .leftFootTop{        position: absolute;        width: 120px;        height: 60px;        border: 4px solid black;        background: #FF9C00;        border-top-left-radius: 80% 70%;        top: -10px;        left: 3px;    }    .toe {        position: absolute;        border-top: 4px solid black;        width: 25px;        height: 20px;        top: 50px;        left: 2px;        border-top-right-radius: 30px 30px;        border-top-left-radius: 10px 10px;        -webkit-transform-origin: top left;        -moz-transform-origin: top left;        -o-transform-origin: top left;        transform-origin: top left;        z-index: 10;        -webkit-transform: rotate(-45deg);        -moz-transform: rotate(-45deg);        -o-transform: rotate(-45deg);        transform: rotate(-45deg);    }    .toe.right{        -webkit-transform: rotate(45deg) rotateY(180deg);        -moz-transform: rotate(45deg) rotateY(180deg);        -o-transform: rotate(45deg) rotateY(180deg);        transform: rotate(45deg) rotateY(180deg);        left: 264px;    }    .leftFootBottomWrapper {        position: absolute;        width: 130px;        top: 52px;        left: -1px;        height: 38px;        overflow: hidden;        z-index: 2;    }    .leftFootBottom{        position: absolute;        width: 120px;        height: 60px;        border: 4px solid #000;        background: #FF9C00;        border-top-left-radius: 50% 44%;        border-top-right-radius: 50% 44%;        border-bottom-left-radius: 50% 56%;        border-bottom-right-radius: 50% 56%;        top: -30px;        left: 3px;    }    .rightFootTopWrapper {        position: absolute;        width: 134px;        top: 22px;        left: 134px;        height: 36px;        overflow: hidden;        z-index: 2;    }    .rightFootTop{        position: absolute;        width: 120px;        height: 60px;        border: 4px solid black;        background: #FF9C00;        border-top-right-radius: 32% 65%;        top: 0px;        left: 4px;    }    .rightFootBottomWrapper {        position: absolute;        width: 134px;        top: 52px;        left: 134px;        height: 38px;        overflow: hidden;    }    .rightFootBottom{        position: absolute;        width: 120px;        height: 60px;        border: 4px solid #000;        background: #FF9C00;        border-top-left-radius: 50% 56%;        border-top-right-radius: 50% 56%;        border-bottom-left-radius: 50% 44%;        border-bottom-right-radius: 50% 44%;        top: -30px;        left: 3px;    }    .rightToe {        position: absolute;        width: 40px;        height: 10px;        border: 2px solid #000;        background: #FF9C00;        border-radius: 50%;        -webkit-transform-origin: bottom right;        -webkit-transform: rotate(34deg);        -moz-transform-origin: bottom right;        -moz-transform: rotate(34deg);        -o-transform-origin: bottom right;        -o-transform: rotate(34deg);        transform-origin: bottom right;        transform: rotate(34deg);        top: 35px;        left: 210px;        z-index: 1;    }    .copyright{        margin: 50px 0 0 0;        height: 50px;        color: #999;        font-family: Tahoma;        font-size: 12px;        text-align: center;    }    .copyright a {        color: #999;        text-decoration: none;    }    .copyright a:hover, .copyright a:focus {        outline: none;        text-decoration: underline;    }</style>

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