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css3基础-文本与字体+转换+过渡+动画+案例

2019年12月31日  | 移动技术网IT编程  | 我要评论

和谐六年,白路神,石榴石滤料

css3文本与字体

 

文本阴影

h1 {
    text-shadow: 5px 5px 5px red;
}

word-break换行：

h1:nth-child(1) { word-break: normal; } /*英文：一行放不下时整个单词换行*/
h1:nth-child(2) { word-break: break-all; } /*英文：一行放不下时把单词拆开换行*/
h1:nth-child(3) { word-break: keep-all; } /*英文：与normal类似*/
h1:nth-child(4) { word-break: normal; } /*中文：正常*/
h1:nth-child(5) { word-break: break-all; } /*中文：正常*/
h1:nth-child(6) { word-break: keep-all; } /*中文：标点符号之后换行*/

word-wrap换行(中文无效)：

h1:nth-child(1) { word-wrap: normal; } /*英文：不换行*/
h1:nth-child(2) { word-wrap: break-word; } /*英文：换行*/

文本溢出时处理：

h1:nth-child(1) { text-overflow: clip; } /*隐藏*/
h1:nth-child(2) { text-overflow: ellipsis; }  /*省略号显示*/
h1:nth-child(3) { text-overflow: '>>'; } /*显示指定字符：只火狐有效*/

自定义字体

.ttf最常见字体，raw格式，不做优化

.otf格式

.woff格式，web最佳格式，压缩版本

.eot格式，ie专用格式

.svg

@font-face {
    font-family: 'myfont';
    src: url('font/myfont.eot');
    src: url('font/myfont.eot?#iefix') format('embedded-opentype'),
         url('font/myfont.ttf') format('truetype'),
         url('font/myfont.woff') format('woff'),
         url('font/myfont.svg#myfont') format('svg');
}
h1 {
    font-family: 'myfont';
}

获取特殊字体格式文件的网址：

 

 

css3转换

 

2d旋转transform:rotate(deg)

.pic1 {
    -webkit-transform: rotate(7deg);
       -moz-transform: rotate(7deg);
        -ms-transform: rotate(7deg);
         -o-transform: rotate(7deg);
            transform: rotate(7deg);
}

2d平移transform: translate()

div > img {
    transform: translatex(200px);
}
div > img {
    transform: translatey(200px);
}
div > img {
    transform: translate(200px, 100px);
}

2d缩放transform: scale()

div > img {
    transform: scalex(.5);
}
div > img {
    transform: scaley(.5);
}
div > img {
    transform: scale(.5, .5);
}

2d斜切skew()

div > img {
    transform: skew(15deg, 15deg); /*当只有一个参数的时候，第二个参数默认为0deg*/
}
div > img {
    transform: skewx(15deg); /*逆时针正，顺时针负*/
}
div > img {
    transform: skewy(15deg);
}

3d旋转

div > img {
    transform: rotatez(45deg);
}
div > img {
    transform: rotate3d(1, 1, 1, 45deg); /*正：顺时针；负：逆时针*/
}

3d平移

div > img {
    transform: translatez(200px);
}
div > img {
    transform: translate3d(200px, 200px, 200px);
}

3d缩放

div > img {
    transform: scalez(.5);
}
div > img {
    transform: scale3d(.5, .5, .5);
}

更改原点位置

div > img {
    transform: rotate3d(1, 1, 1, 45deg);
    transform-origin: left top 0;
}

matrix_translate

transform: matrix(1, 0, 0, 1, x, y)等同于transform: translate(x, y)

div:nth-child(1) > img {
    transform: matrix(1, 0, 0, 1, 30, 30);
}
div:nth-child(2) > img {
    transform: translate(30px, 30px);
}

matrix_ scale

transform: matrix(sx, 0, 0, sy, 0, 0)等同于transform: scale(sx, sy)

div:nth-child(1) > img {
    transform: matrix(.5, 0, 0, .5, 0, 0);
}
div:nth-child(2) > img {
    transform: scale(.5, .5);
}

matrix_ skew

transform: matrix(1, tanθy, tanθx, 1, 0, 0)等同于transform: skew(θxdeg, θydeg)

div:nth-child(1) > img {
    transform: matrix(1, .5774, .5774, 1, 0, 0);
}
div:nth-child(2) > img {
    transform: skew(30deg, 30deg);
}

matrix_ rotate

transform: matrix(cosθ, sinθ, -sinθ, cosθ, 0, 0)等同于transform: rotate(θdeg)

div:nth-child(1) > img {
    transform: matrix(.7071, .7071, -0.7071, .7071, 0, 0);
}
div:nth-child(2) > img {
    transform: rotate(45deg);
}

matrix镜像对称：

matrix((1-k*k) / (1+k*k), 2k / (1 + k*k), 2k / (1 + k*k), (k*k - 1) / (1+k*k), 0, 0)

如果对称轴y=-x，即斜率k=-1，代入公式计算：

matrix((1-  -1*-1) / (1+ -1*-1)， 2*-1 / (1 + -1*-1)，2*-1 / (1 + -1*-1)，(-1*-1 - 1) / (1+-1*-1), 0, 0)即得到matrix((1- 1) / (1+ 1)， -2 / (1 +1)，-2 / (1 + 1)，(1 - 1) / (1+1), 0, 0)=matrix(0，-1，-1，0, 0, 0)

有个可爱的小伙伴做的计算网址：

div:nth-child(1) > img {
    transform: matrix3d(.5, 0, 0, 0, 0, .5, 0, 0, 0, 0, .5, 0, 0, 0, 0, 1);
}
div:nth-child(2) > img {
    transform: scale3d(.5, .5, .5);
}

transform-style: preserve-3d;

实现父元素对子元素的3d遮罩效果

demo：

<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>transform style</title>
<style type="text/css">
body { background: #abcdef; }
div { position: relative; width: 760px; height: 760px; margin: auto;
    -webkit-transform-style: preserve-3d;
       -moz-transform-style: preserve-3d;
        -ms-transform-style: preserve-3d;
         -o-transform-style: preserve-3d;
            transform-style: preserve-3d;
}
div > .inner { position: absolute; top: 0; right: 0; bottom: 0; left: 0; width: 100%; height: 100%; margin: auto; transform: rotatey(-45deg); background: url(images/circle_inner.png) no-repeat center center; }
div > .middle { position: absolute; top: 0; right: 0; bottom: 0; left: 0; width: 100%; height: 100%; margin: auto; transform: rotatex(-45deg); background: url(images/circle_middle.png) no-repeat center center; }
div > .outer { position: absolute; top: 0; right: 0; bottom: 0; left: 0; width: 100%; height: 100%; margin: auto; transform: rotatez(-45deg); background: url(images/circle_outer.png) no-repeat center center; }
div > .imooc { position: absolute; top: 0; right: 0; bottom: 0; left: 0; width: 100%; height: 100%; margin: auto; background: url(images/imooc.png) no-repeat center center; }
</style>
</head>
<body>
<div>
    <div class="inner"></div>
    <div class="middle"></div>
    <div class="outer"></div>
    <div class="imooc"></div>
</div>
</body>
</html>

 

 

 

perspective: 500px;透视距离，perspective属性指定了观察者与z=0平面的距离，使具有三维位置变换的元素产生透视效果。z>0的三维元素比正常大，而z<0时则比正常小，大小程度由该属性的值决定

perspective-origin: bottom;透视点的位置，默认情况下，消失点位于元素的中心，但是可以通过设置perspective-origin属性来改变其位置

div { position: relative; width: 760px; height: 760px; margin: auto;
    -webkit-transform-style: preserve-3d;
       -moz-transform-style: preserve-3d;
        -ms-transform-style: preserve-3d;
         -o-transform-style: preserve-3d;
            transform-style: preserve-3d;
    -webkit-perspective: 500px;
       -moz-perspective: 500px;
        -ms-perspective: 500px;
         -o-perspective: 500px;
            perspective: 500px;
    -webkit-perspective-origin: bottom;
       -moz-perspective-origin: bottom;
        -ms-perspective-origin: bottom;
         -o-perspective-origin: bottom;
            perspective-origin: bottom;
}

元素背面是否可见

backface-visibility: hidden;
backface-visibility: visible;

 

css3过渡

 

transition: transform，如果不指定默认是all

div { width: 800px; height: 800px; margin: auto; transform: rotate(0deg); background: url(images/imooc.png) no-repeat center center, url(images/circle_outer.png) no-repeat center center;
    -webkit-transition: transform 2s ease-in-out 1s;
       -moz-transition: transform 2s ease-in-out 1s;
        -ms-transition: transform 2s ease-in-out 1s;
         -o-transition: transform 2s ease-in-out 1s;
            transition: transform 2s ease-in-out 1s;
}
div:hover { cursor: pointer; transform: rotate(180deg);
    -webkit-transition: transform 2s ease-in-out 1s;
       -moz-transition: transform 2s ease-in-out 1s;
        -ms-transition: transform 2s ease-in-out 1s;
         -o-transition: transform 2s ease-in-out 1s;
            transition: transform 2s ease-in-out 1s;
}

transition-timing-function：

#div1 {transition-timing-function: linear;} /*线性*/
#div2 {transition-timing-function: ease;} /*平滑*/
#div3 {transition-timing-function: ease-in;} /*慢入*/
#div4 {transition-timing-function: ease-out;} /*慢出*/
#div5 {transition-timing-function: ease-in-out;} /*慢入慢出*/

简写：属性+动画时间+运动函数+延迟时间

transition: transform 2s ease-in-out 1s;

当鼠标经过一个元素的时候，该元素翻转360°并且放大一倍显示

<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>demo</title>
    <style>
        div {
            font-size: 14px;
            font-weight: bold;
            line-height: 50px;
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            width: 200px;
            height: 50px;
            margin: auto;
            cursor: pointer;
            text-align: center;
            background: #abcdef;
            /*此处写代码*/
            -webkit-transform:rotate(0deg) scale(1);
            -webkit-transition:transform 1s;
           
        }
        /*此处写代码*/
       div:hover{
           -webkit-transform:rotate(360deg) scale(2);
           -webkit-transition:transform 1s;
       }
    </style>
</head>
<body>
    <div>www.test.com</div>
</html>

 

 

 

 

css3动画

 

animation-delay 属性定义动画什么时候开始，单位可以是秒（s）或毫秒（ms），允许负值，-2s使动画马上开始，但会跳过2s进入动画

animation-iteration-count: infinite;无限循环/具体的数值

 

旋转太极：

<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>demo</title>
    <style type="text/css">
        div {
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            box-sizing: border-box;
            width: 400px;
            height: 400px;
            margin: auto;
            border: 1px solid red;
            border-bottom: 200px solid red;
            border-radius: 50%;
            transform-origin: 50% 50%;
            animation-name: rotate;
            animation-duration: 5s;
            animation-timing-function: linear;
            animation:rotate 5s linear infinite;
        }
        div::before{
            content:" ";
            width:60px;
            height:60px;
            border-radius:50%;
            position: absolute;
            top:100px;
            left:0;
            background-color: red;
            border: 70px solid white;
        }
        div::after{
            content:" ";
            width:60px;
            height:60px;
            border-radius:50%;
            position: absolute;
            top:100px;
            right:0;
            background-color: white;
            border: 70px solid red;
        }
        @keyframes rotate{
            from{transform:rotate(0deg);}
            to{transform:rotate(360deg);}
        }
    </style>
</head>
<body>
    <div></div>
</body>
</html>

animation-direction与循环搭配，如果动画被设置为只播放一次，该属性将不起作用：

animation-direction: normal; /*正常*/
animation-direction: reverse; /*反向*/
animation-direction: alternate; /*先正向再反向*/
animation-direction: alternate-reverse; /*先反向再正向*/

动画暂停或未播放时的样式

animation-fill-mode: none; /*默认*/
animation-fill-mode: forwards; /*动画结束时的状态*/
animation-fill-mode: backwords; /*动画开始时的状态*/
animation-fill-mode: both; /*动画开始或结束的状态*/
animation-play-state: paused; /*动画暂停*/
animation-play-state: running; /*动画正在运行*/

鼠标悬停时暂停：

div {
    cursor: pointer;
    -webkit-animation-play-state: running;
            animation-play-state: running;
}
div:hover {
    cursor: pointer;
    -webkit-animation-play-state: paused;
            animation-play-state: paused;
}

animation简写：

animation:name duration timing-function delay iteration-count direction fill-mode play-state;

滚屏网页都有一个提示滚屏箭头动画效果

<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>2-9</title>
    <style type="text/css">
        div {
            font-family: arial;
            font-size: 72px;
            font-weight: bold;
            position: fixed;
            right: 0;
            left: 0;
            width: 30px;
            height: 30px;
            margin: auto;
            transform: rotate(90deg);
            cursor:pointer;
            animation:my_move .5s ease-in-out .5s infinite alternate ;
        }
        @keyframes my_move{
            from{bottom:200px;}
            to{bottom:100px;}
        }
    </style>
</head>
<body>
    <div>&gt;</div>
</body>
</html>

定义元素忽明忽暗的闪烁效果

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