h5css3_02练习

基础案例

01-模拟二维码

训练描述

利用CSS3动画属性,模拟扫描二维码的场景

训练提示

  1. 在大盒子中上下正常排版两张图片
  2. 利用动画,让第二张图片上下发生位移
  3. 设置动画属性,注意动画设置的兼容问题

操作步骤

  1. 创建index文件,新建css文件夹,创建base.css文件并初始化基本代码,新建images文件夹

  2. 创建index.css保存至css文件夹,首页html文件引入css样式

  3. 编写结构代码

    • 创建父盒子,内部插入两张图片,二维码和扫描的光线

      <div class="v-code">
             <img class="erweima" src="images/57b280b496dee47507111c56NRN73rVj.png" alt="">
             <img class="line" src="images/line_dd0b705.png" alt="">
      </div>
    • 排版父盒子和两个图片的位置

      body {
         padding: 50px;
      }
      
      .v-code {
         width: 145px;
          height: 240px;
          padding-top: 47px;
          float: left;
          position: relative;
          background: url(../images/index_z_71df05e.png);
          background-position: 0px 0px;
          background-repeat: no-repeat;
      
      }
      
      .v-code .erweima {
         display: block;
         margin: 0 auto;
         width: 107px;
      }
      
      .v-code .line {
         position: absolute;
          left: 12px;
          top: 45px;
          -webkit-animation: mainbarcode 4s linear infinite;
          -moz-animation: mainbarcode 4s linear infinite;
          -ms-animation: mainbarcode 4s linear infinite;
          animation: mainbarcode 4s linear infinite;
      }
    • 声明动画

      @keyframes mainbarcode {
         0% {
             -webkit-transform: translate3d(0,0,0);
             -moz-transform: translate3d(0,0,0);
             -ms-transform: translate3d(0,0,0);
             transform: translate3d(0,0,0);
         }
         50% {
             -webkit-transform: translate3d(0,100px,0);
             -moz-transform: translate3d(0,100px,0);
             -ms-transform: translate3d(0,100px,0);
             transform: translate3d(0,100px,0);
         }
         100% {
             -webkit-transform: translate3d(0,0,0);
             -moz-transform: translate3d(0,0,0);
             -ms-transform: translate3d(0,0,0);
             transform: translate3d(0,0,0);
         }
      }
  4. 打开首页文件,观察效果

02-人物走动f4

训练描述

当浏览此网页的时候,如果停顿等待的时间较长,将会出现4个小人物走动,滚动或者鼠标经过就消失

训练提示

  1. 先进行基本的布局,排出来具体的大小位置,在底部均匀分布

  2. 给每个盒子设置背景,然后创建公共移动的动画
  3. 创建该变背景的动画,将两个动画引入在不同盒子上,重复执行

操作步骤

​ 1,创建index文件,新建css文件夹并创建base.css文件,初始化css样式

​ 2,新建images文件夹,在首页文件中引入样式

​ 3,创建基本的结构

    <div class="f4_box">
        <div class="walk01">
            <div class="west-01"></div>
        </div>
        <div class="walk02">
            <div class="west-02"></div>
        </div>
        <div class="walk03">
            <div class="west-03"></div>
        </div>
        <div class="walk04">
            <div class="west-04"></div>
        </div>
    </div>

​ 4,排版基本的样式

.f4_box {
    position: fixed;/*固定*/
    width: 100%;
    height: 175px;
    left: 0;
    bottom: 0;
    z-index: 99;
    -webkit-transition: all 3.2s ease;
    -moz-transition: all 3.2s ease;
    -ms-transition: all 3.2s ease;
    transition: all 3.2s ease;
}

.walk01 {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 154px;
    height: 121px;
    opacity: 0;
    -webkit-animation: move01 15s linear infinite;
    -moz-animation: move01 15s linear infinite;
    -ms-animation: move01 15s linear infinite;
    animation: move01 15s linear infinite;
}

.west-01 {
    width: 154px;
    height: 121px;
    background-image: url(../images/txgc_6d0e9e5.png);
    background-repeat: no-repeat;
    -webkit-animation: play01 .4s steps(2) infinite;
    -moz-animation: play01 .4s steps(2) infinite;
    -ms-animation: play01 .4s steps(2) infinite;
    animation: play01 .4s steps(2) infinite;
}

@keyframes move01 {
    0% {
        -webkit-transform: translate(-200px,0);
        -moz-transform: translate(-200px,0);
        -ms-transform: translate(-200px,0);
        transform: translate(-200px,0);
        opacity: 1;
    }
    100% {
        -webkit-transform: translate(1920px,0);
        -moz-transform: translate(1920px,0);
        -ms-transform: translate(1920px,0);
        transform: translate(1920px,0);
        opacity: 1;
    }
}


@keyframes play01 {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: -308px 0;
    }
}

​ 5,设置其他盒子的样式

.walk02 {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 167px;
    height: 176px;
    opacity: 0;
    -webkit-animation: move01 15s linear 2s infinite;
    -moz-animation: move01 15s linear 2s infinite;
    -ms-animation: move01 15s linear 2s infinite;
    animation: move01 15s linear 2s infinite;
}

.west-02 {
    width: 167px;
    height: 176px;
    background-image: url(../images/txgh_fee2457.png);
    background-repeat: no-repeat;
    -webkit-animation: play02 .4s steps(2) infinite;
    -moz-animation: play02 .4s steps(2) infinite;
    -ms-animation: play02 .4s steps(2) infinite;
    animation: play02 .4s steps(2) infinite;
}

@keyframes play02 {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: -334px 0;
    }
}

.walk03 {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 161px;
    height: 149px;
    opacity: 0;
    -webkit-animation: move01 15s linear 4s infinite;
    -moz-animation: move01 15s linear 4s infinite;
    -ms-animation: move01 15s linear 4s infinite;
    animation: move01 15s linear 4s infinite;
}

.west-03 {
    width: 161px;
    height: 149px;
    background-image: url(../images/txgl_c15cfd8.png);
    background-repeat: no-repeat;
    -webkit-animation: play03 .4s steps(2) infinite;
    -moz-animation: play03 .4s steps(2) infinite;
    -ms-animation: play03 .4s steps(2) infinite;
    animation: play03 .4s steps(2) infinite;
}

@keyframes play03 {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: -322px 0;
    }
}

.walk04 {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 171px;
    height: 157px;
    opacity: 0;
    -webkit-animation: move01 15s linear 6s infinite;
    -moz-animation: move01 15s linear 6s infinite;
    -ms-animation: move01 15s linear 6s infinite;
    animation: move01 15s linear 6s infinite;
}

.west-04 {
    width: 171px;
    height: 157px;
    background-image: url(../images/txgq_d281c9b.png);
    background-repeat: no-repeat;
    -webkit-animation: play04 .4s steps(2) infinite;
    -moz-animation: play04 .4s steps(2) infinite;
    -ms-animation: play04 .4s steps(2) infinite;
    animation: play04 .4s steps(2) infinite;
}

@keyframes play04 {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: -342px 0;
    }
}

03-旋转小动画

训练描述

页面一打开,就有一个小图标一直旋转,当鼠标经过的时候,旋转停下来了

训练提示

  1. 创建index文件,新建css文件创建base.css文件,完成css初始化

  2. 在首页文件中引入文件,完成结构布局

  3. 完成样式排版,当鼠标经过,调用动画的播放属性,让它停下来

操作步骤

  1. 创建基本结构

    <div class="play-video"></div>
  2. 设置基本样式和鼠标经过样式

    html, body {
     height: 100%;
     background: url(../images/bg_81ab3d6.jpg) no-repeat center top;
    }
    
    .play-video {
     position: absolute;
        top: 280px;
        right: 380px;
        width: 93px;
        height: 93px;
        margin-left: -47px;
        z-index: 4;
    }
    
    .play-video::before,
    .play-video::after {
     display: block;
        width: 100%;
        height: 100%;
        content: "";
        position: absolute;
    }
    
    .play-video::before {
        background-image: url(../images/index_z_9769688.png);
        background-position: -744px -819px;
        background-repeat: no-repeat;
     -webkit-animation: rotate1 2s linear infinite 300ms 0 ease;
        -moz-animation: rotate1 2s linear infinite 300ms 0 ease;
        -ms-animation: rotate1 2s linear infinite 300ms 0 ease;
        animation: rotate1 2s linear infinite 300ms 0 ease;
        -moz-animation: rotate1 2s linear infinite;
        -webkit-animation: rotate1 2s linear infinite;
        -o-animation: rotate1 2s linear infinite;
        -ms-animation: rotate1 2s linear infinite;
        animation: rotate1 2s linear infinite;
    }
    
    .play-video::after {
     position: absolute;
        left: 50%;
        top: 50%;
        width: 21px;
        height: 25px;
        margin-top: -12px;
        margin-left: -10px;
        background-image: url(../images/index_z_9769688.png);
        background-position: -2290px -107px;
        background-repeat: no-repeat;
    }
    
    @keyframes rotate1 {
     0% {
         transform: rotate(0deg);
     }
     100% {
         transform: rotate(360deg);
     }
    }
  3. 设置鼠标经过样式

    .play-video:hover {
     cursor: pointer;
    }
    
    .play-video:hover::before {
     -webkit-animation-play-state: paused;
        -moz-animation-play-state: paused;
        -o-animation-play-state: paused;
        animation-play-state: paused;
        background-repeat: no-repeat;
    }

扩展案例

04-背景变换

训练描述

1,以往的背景经过都是半透明盒子遮罩直上直下或者渐入渐出
2,以斜着进入离开需要用到CSS3的斜切

训练提示

  1. 保存图片,新建文件,初始化样式:
  2. 设置鼠标经过样式,利用放大的斜切的原理,让父盒子溢出隐藏

操作步骤

  1. 新建基本的结构
<div class="content">
    <a href="javascipt:;"></a>
</div>
  1. 创建CSS样式
.content {
    width: 275px;
    height: 185px;
    background: url(bgi.jpg) no-repeat;
    margin: 100px auto;
    overflow: hidden;
}
a {
    display: block;
    width: 100%;
    height: 100%;
    background-color: rgba(47, 214, 133, .75);
    opacity: 0;
    transition: all .1s ease-in;
}
  1. 设置鼠标经过演示
.content:hover a {
    opacity: 1;
    /*动画引入*/
    animation: donghua .3s forwards;
}

/*动画声明*/
@keyframes donghua {
    from {
        transform: translateX(130%) skewX(-45deg) scale(1);/*skewX  斜偏x */
    }
    to {
        transform: translateX(0) skewX(-45deg) scale(2);
    }
}

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转载自www.cnblogs.com/fly-book/p/12096127.html