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IT修真院·坑乎 | Java(后端),CSS(前端),JavaScript(前端),PM(产品经理),UI(交互设计),QA(测试),Android(安卓APP),iOS(苹果APP),OP(运维),Python(后端)日常在线问答学习平台

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7

12

audio播放器

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

第一种：<button class="btn btn-block sing"> 
                     <audio  src="audio/财富自由.mp3" controls="controls">
                     </audio>
               </button>
第二种：<button class="btn btn-block sing">
                    <audio src="audio/财富自由.mp3" autoplay="autoplay">
                    </audio>
                </button>

该问题已被官方收录

如何触发鼠标点击事件

3

4

事件

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<div class="fathelement{
    display:none; //元素默认是隐藏的
}

//当鼠标经过兄弟元素brother-showing时，也就是经过父级father的时候。父级获得hover状态，在父级hover的基础上写element的样式：
.father:hover .element{
    display:block ;

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在一个父元素的大盒子里放一个子元素小盒子，大盒子的左边边框丢了，这是什么情况？？

1

3

盒模型

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width; initial-scale=1.0;minimum-scale=1.0; 
    maximum-scale=1.0; user-scalable=no;">
    <title>捉鬼游戏</title>
    <style pyte="txet/css">
    html{
        font-size:312.5%;
    }
    body{
        margin: 0;
        font-size:initial;
    }
    p,ul,li{
        padding: 0;
        margin: 0;
        list-style: none;
    }

    /* header眉页 */

    header{
        height:.9rem;
        background: #29BDE0;
    }
    .left-box{
        width: 1rem;
        border:none;
        background: #29BDE0;
        margin: .3rem 0 0 .22rem;
        outline:none;
        
    }
    .left{
        width:.34rem;
        margin: .08rem;
        border: .02rem solid #FFFFFF;
    }

    /* main主体 */
    .main-box{
        height: 1.16rem;
        margin: .27rem .36rem;
        border: solid .01rem #C9C9C9;
        background: #FFFFFF;
        line-height: 1.16rem;
        text-align:center;
        font-size: .35rem;
        color: #9A9A9A
    }
    .arrows::after{
        display: inline-block;
        float: right;
        content: "";
        width: .24rem;
        height:.24rem;
        margin: .42rem .2rem 0 0;
        border-top:.05rem solid #E7E7E7;
        border-right: .05rem solid #E7E7E7;
        transform: rotate(45deg);
    }

    /* footer尾页 */
    .footer-box{
       height:7.76rem;
       margin: 0 .35rem .62rem .35rem;
       border: solid .01rem #C9C9C9;
       background: #FFFFFF;
    }
    .top-box{
        height: .9rem;
        border-bottom: .01rem solid #FBB435;
        background: #FFFFFF;
    }
    </style>
</head>
<body>
    <header>
        <button class="left-box" type="button">
            <p class="left"></p>
            <p class="left"></p>
            <p class="left"></p>
        </button>
    </header>
    <main>
        <div class="main-box">
            <p class="arrows">上次游戏：捉鬼猜词版</p>
        </div>
    </main>
    <footer>
        <ul class="footer-box">
            <li class="top-box"></li>
        </ul>
    </footer>
</body>
</html>

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文字居中的问题，假如太少了不知道怎么操作？

7

2

居中

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

.good {
    margin: 2rem;
    font-size: 2rem;
    color: #ffc865;
    text-align: center;
}

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如何去掉边框和内容的空隙

1

2

边距

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

 <!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0,
     <!--minimum-scale=0.5, maximum-scale=2.0, user-scalable=yes"/>
    <script src="//cdn.bootcss.com/jquery/1.11.3/jquery.min.js"></script>
    <link rel="stylesheet" href="//cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap.min.css">
    <script src="//cdn.bootcss.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="../css/task7.2.css">
</head>
<body>
<div class="wrap">
    <div class="head">
      <img src="../img/task7.1.1.png" class="catalogue" alt="">
      <span class="vote">投票</span>
      <img src="../img/task7.1.2.png" class="wrong" alt="">
     </div>
    <div class="make">
      <span>发表讨论结果，大家请投票</span>
        <img src="../img/taask7.17.png" alt="">
        <audio src="../audio/财富自由.mp3" controls="controls">
            Your browser does not support the audio element.
        </audio>
    </div>
    <div class="makk">
    </div>
      <p class="cilck">点击票数最多人的头像</p>
    <div class="olk">
      <div class="center">
        <div class="cox">
           <p class="iu">水民</p>
           <p class="ui">一号</p>
            <div class="mxc">
                <img src="../img/task7.7.png"  alt="">
            </div>
        </div>
        <div class="cox">
            <P class="iu">水民</P>
            <p class="ui">2号</p>
            <div class="mxc">
                <img src="../img/task7.7.png"  alt="">
            </div>
        </div>
        <div class="cox">
            <p class="iu">警察</p>
            <p class="ui">3号</p>
            <div class="mxc">
                <img src="../img/task7.7.png"  alt="">
            </div>
        </div>
        <div class="cox">
            <p class="iu">法官</p>
            <p class="ui">4号</p>
            <div class="mxc">
                <img src="../img/task7.7.png"  alt="">
            </div>
        </div>
        <div class="cox">
            <p class="iu">狙击手</p>
            <p class="ui">5号</p>
            <div class="mxc">
                <img src="../img/task7.7.png"  alt="">
            </div>
        </div>
        <div class="cox">
            <p class="iu">医生</p>
            <p class="ui">6号</p>
            <div class="mxc">
                <img src="../img/task7.7.png"  alt="">
            </div>
        </div>
        <div class="cox">
            <p class="iu">杀手</p>
            <p class="ui">7号</p>
            <div class="mxc">
                <img src="../img/task7.7.png"  alt="">
            </div>
        </div>
        <div class="cox">
            <p class="iu">水民</p>
            <p class="ui">8号</p>
            <div class="mxc">
                <img src="../img/task7.7.png"  alt="">
            </div>
        </div>
        <div class="cox">
            <p class="iu">水民</p>
            <p class="ui">9号</p>
            <div class="mxc">
                <img src="../img/task7.7.png"  alt="">
            </div>
        </div>
        <div class="cox">
            <p class="iu">水民</p>
            <p class="ui">10号</p>
            <div class="mxc">
                <img src="../img/task7.7.png"  alt="">
            </div>
        </div>
        <div class="cox">
            <p class="iu">水民</p>
            <p class="ui">11号</p>
            <div class="mxc">
                <img src="../img/task7.7.png"  alt="">
            </div>
        </div>
        <div class="cox">
            <p class="iu">水民</p>
            <p class="ui">12号</p>
            <div class="mxc">
                <img src="../img/task7.7.png"  alt="">
            </div>
        </div>
      </div>
     </div>
    <footer class="vc">
        <a href="../html/task7.3html.html" >
        <button>投死</button>
        </a>
    </footer>
</div>
</body>
</html>
*{
    margin: 0;
    padding: 0;
}
body{
    background: #29bde0;
}
.head{
    width: 100%;
    height: 14.59vw;
    background: #29bde0;
}
.catalogue{
    width: 6.093vw;
    height: 5.25vw;
    margin-top: 4.78vw;
    margin-left: 3.59vw;
}
.wrap{
    background: #29bde0;
}
.vote{
    position: absolute;
    margin-left: 38vw;
    font-size: 4vw;
    color: #ffffff;
    margin-top: 5vw;
}
.wrong{
    width: 3.78vw;
    margin-left: 34.31vw;
    margin-top: 6vw;
    margin-right: 4vw;
    float: right;
}
.make{
    height: 12.65vw;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.12rem;
    background: #b9e9f5;
}
.make audio{
    width: 5vw;
    height: 2vw;
    margin-right: 2.65vw;
    opacity: 0;
}
.make img{
    position: absolute;
    width: 8.125vw;
    margin-left: 88vw;
}
.make span{
    margin-left: 7.5vw;
    font-size: 3vw;
    padding-top:0.8vw;
}
.makk{
    width: 0;
    height: 0;
    margin-left: 11.25vw;
    border-width: 2vw;
    border-style: solid;
    border-color: #b9e9f5 transparent transparent transparent;
}
.cilck{
    color: #ffffff;
    font-size: 3vw;
    margin-left: 11.40vw;
}
.olk{
  margin-left: 2vw;
    margin-bottom: 16.5vw;
}
.center{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    list-style: none;
    padding: 0;
}
.cox{
    height: 25vw;
    width: 25vw;
    margin-right: 3vw;
    margin-bottom: 8vw;
    font-size: .17rem;
    text-align: center;
    border: 1vw solid white;
}
.iu{
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 70%;
    margin: 0;
    color: #565656;
    background-color: #f5c97b;
    font-size: 3vw;

}
.ui{
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 30%;
    margin: 0;
    background-color: #83b09a;
    font-size: 3vw;
}
.mxc img{
    margin-top: 2vw;
    display: none;
    width: 24vw;
    margin-left: -0.5vw;
}
.cox:hover img{
    display: block;
}
.vc{
    position: fixed;
    bottom: 0;
    padding: 1vw;
    width: 100%;
    height: 17vw;
    text-align: center;
    color: #fff;
    background-color: #29bde0;
}
.vc button{
    border: none;
    width: 80%;
    height: 9vw;
    background-color: #fbb435;
    margin-top: 5vw;
    font-size: 6vw;
    color: #ffffff;
}

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rgba和opacity有什么区别

1

1

透明度

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

 position: fixed;
    right: -25.5rem;
    opacity: 0;

height: 6.45rem;
    width: 100%;
    position: fixed;
    bottom: 0;
    z-index: 1;
    background:rgba(153,223,240,.4);
    padding: 1.2rem 0.9rem 0.95rem 0rem;
    text-align: center;

该问题已被官方收录

在使底部footer背景透明的时候如果使用opacity

1

1

透明度

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

footer {
    display: flex;
    justify-content: space-around;
    align-items: center;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 0.65rem;
    opacity: 0.8;
    background: rgba(41, 189, 224, 0.8);
}
footer button {
    position: relative;
    width: 40vw;
    height: 0.43rem;
    font-size: 0.2rem;
    border-radius: 0.07rem;
    color: white;
    opacity: initial;
}

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某些属性不能用样式表控制，只能写在标签里

0

1

表单元素

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

div class="input">
        <img src="../img/css4/css401.jpg">
        <input type="text" placeholder="请输入用户名"  maxlength="11"  onkeyup="value=value.replace(/[^\d]/g,'')">
    </div>
    <div class="input">
        <img src="../img/css4/css402.jpg">
        <input type="password" placeholder="请输入密码" >
    </div>

 <audio class="audio" src="../audio/css7.mp3" controls="controls">
        您的浏览器不支持音频
    </audio>

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任务七雪碧图调好位置之后无法调节大小

2

1

雪碧图

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

.k{
    background: url(../img/task7-2.11.png) no-repeat;
    background-size: 20vw 5vw;
    display: inline-block;

}
.k1{
    height: 5vw;
    width: 5vw;
    background-position: 0 0;
}
.k2{
    height: 5vw;
    width: 5vw;
    background-position: -5vw 0;
}
.k3{
    height: 5vw;
    width: 5vw;
    background-position: -10vw 0;
}
.k4{
    height: 5vw;
    width: 5vw;
    background-position: -15vw 0;
}

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设置a标签宽高

2

1

行内元素

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

  <div class="lastgame">
            <span>上次游戏：捉鬼猜词版</span>
            <div class="greater"></div>
        </div>

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