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

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

咨询电话 : 010-59478634

全部问题

已收录问题

未收录问题

没有找到答案，去提问>>>

该问题已被官方收录

在这副图上面，我的三个词语都是这样在上面的，想要让他们都保持居中

3

1

布局

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">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" type="text/css" href="task4.css">
</head>

<body>
    <header>
        <span style="float: left;">关闭</span>
        <span>登陆</span>
        <span style="float:right;">注册</span>
    </header>
</body>

</html>





body{
    padding: 0;
    margin: 0;
}
span{
    margin: 0; 
}
header {
    width: 720px;
    height: 88px;
    padding: 0px;
    margin: 0px;
    background-color: #5fc0cd;
    text-align: center;
}
span{
    color: white;
    font-size: 20px; 
    display:inline-block;
   
}

该问题已被官方收录

能不能利用纯css自动轮播和点击轮换效果同时出现

0

1

轮播

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<section class="slider-contaner">
    <div class="banner-arrow">
        <a href="#a01" class="banner-left"></a>
        <a href="#" class="banner-right"></a>
    </div>
    <ul class="slider">
        <li id="a01" class="slider-item slider-item1"></li>
        <li class="slider-item slider-item2"></li>
        <li class="slider-item slider-item3"></li>
        <li class="slider-item slider-item4"></li>
        <li class="slider-item slider-item5"></li>
    </ul>
    <div class="focus-container">
        <ul class="floatfix">
            <li><div class="focus-item focus-item1"></div></li>
            <li><div class="focus-item focus-item2"></div></li>
            <li><div class="focus-item focus-item3"></div></li>
            <li><div class="focus-item focus-item4"></div></li>
            <li><div class="focus-item focus-item5"></div></li>
        </ul>
    </div>
</section>

/*css reset end*/

/*github展示统一样式start*/
a {
    text-decoration: none;
    color: #fff;
}
/*css public start*/
.floatfix {
    *zoom: 1;
}
.floatfix:after {
    content: "";
    display: table;
    clear: both;
}

/*css public end*/

/*slider start*/
.slider-contaner {
    width: 100%;
    position: relative;
}
.slider-item + .slider-item {
    opacity: 0;
}
.slider-item {
    width: 100%;
    position: absolute;
    animation-timing-function: linear;
    animation-name: fade;
    animation-iteration-count: infinite;
    background-size: 100%;
}
.focus-container {
    position: absolute;
    z-index: 7;
    margin: 0 auto;
    left: 0;
    right: 0;
}
.focus-container li {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    float: left;
    margin-right: 10px;
    background: #fff;
}
.focus-item {
    width: 100%;
    height: 100%;
    border-radius: inherit;
    animation-timing-function: linear;
    animation-name: fade;
    animation-iteration-count: infinite;
}
.focus-item2, .focus-item3, .focus-item4, .focus-item5 {
    opacity: 0;
}
.focus-container ul {
    margin-left: 46%;
}

/*设置轮播焦点的位置*/
.focus-container {
    bottom: 2%;
}

/*设置当前图片焦点的颜色*/
.focus-item {
    background: #51B1D9;
}

/*设置动画，请根据实际需要修改秒数*/
.slider-item, .focus-item {
    animation-duration: 20s;
}
.slider-item1, .focus-item1 {
    animation-delay: -1s;
}
.slider-item2, .focus-item2 {
    animation-delay: 3s;
}
.slider-item3, .focus-item3 {
    animation-delay: 7s;
}
.slider-item4, .focus-item4 {
    animation-delay: 11s;
}
.slider-item5, .focus-item5 {
    animation-delay: 15s;
}
@keyframes fade {
    0% {
        opacity: 0;
        z-index: 2;
    }
    5% {
        opacity: 1;
        z-index: 1;
    }
    20% {
        opacity: 1;
        z-index: 1;
    }
    25% {
        opacity: 0;
        z-index: 0;
    }
    100% {
        opacity: 0;
        z-index: 0;
    }
}

/*设置背景，响应式请利用媒体查询根据断点修改路径*/
.slider-item1 {
    background-image: url(backimage1.png);
}
.slider-item2 {
    background-image: url(backimage2.png);
}
.slider-item3 {
    background-image: url(backimage1.png);
}
.slider-item4 {
    background-image: url(backimage2.png);
}
.slider-item5 {
    background-image: url(backimage1.png);
}

/*设置图片的高度，请根据具体需要修改百分比，响应式及时修改此值*/
.slider, .slider-item {
    padding-bottom: 30%;
}

该问题已被官方收录

制作侧边栏时，怎么样让侧边栏点击后推开主题内容？

0

1

侧边栏

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1.0, user-scalable=0">
    <title>首页</title>
    <link rel="stylesheet" href="task13-1.css">
  </head>
  <body>
    <input type="checkbox" name="male" id="male">
    <label for="male"><img src="../task7/images/icon-2.png"></label>
    <aside>
      <ul>
        <li>公告<img src="../task7/images/icon-back.png"></li>
        <li>设置<img src="../task7/images/icon-back.png"></li>
        <li>关注<img src="../task7/images/icon-back.png"></li>
        <li>关于<img src="../task7/images/icon-back.png"></li>
      </ul>
    </aside>
    <header></header>
    <nav>
      <span>上次游戏:捉鬼猜词版</span>
      <a href="task13-2.html"><img src="../task7/images/icon-back.png"></a>
    </nav>
    <main>
      <div></div>
      <p>捉鬼游戏</p>
      <a href="task13-2.html"><span>简化版</span></a>有1133个用户正在玩这款游戏
      <a href="task13-2.html"><span>猜词版</span></a>有1133个用户正在玩这款游戏
      <a href="task13-2.html"><span>白痴版</span></a>有1133个用户正在玩这款游戏
      <span><span class="the-one">•</span>••• </span>
    </main>
  </body>
</html>

@charset "UTF-8";
/* 重置样式 */
button {
  padding: 0;
  border: none;
  background: transparent;
  outline: none; }

a {
  text-decoration: none;
  outline: none; }

p {
  margin: 0; }

ul {
  margin: 0;
  padding: 0;
  outline: none;
  list-style: none; }

.flt-right {
  float: right; }

/* 基础样式 */
::-webkit-scrollbar {
  display: none; }

img {
  transform: scale(0.5); }

/* 全局样式 */
html {
  font-size: 625%;
  overflow-x: hidden; }

body {
  font-size: .12rem;
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden; }

body {
  background: #f0f0f0;
  overflow: hidden; }

input[type=checkbox]:checked ~ aside {
  transform: translateX(0);
  transition: 0.2s ease-out; }

input[type=checkbox]:checked + label {
  margin-top: 0.05rem;
  transform: translateX(75vw);
  z-index: 9999;
  transition: 0.2s ease-out; }

input[type=checkbox]:checked ~ header {
  transform: translateX(75vw);
  transition: 0.2s ease-out; }

input[type=checkbox]:checked ~ nav {
  transform: translateX(75vw);
  transition: 0.2s ease-out; }

input[type=checkbox]:checked ~ main {
  transform: translateX(75vw);
  transition: 0.2s ease-out; }

label {
  position: absolute;
  top: 0.05rem;
  z-index: 9999; }

input {
  position: absolute;
  opacity: 0; }

aside {
  position: absolute;
  height: 100%;
  width: 75vw;
  background: #ffffff;
  box-shadow: 0 0 25px #9a9a9a;
  z-index: 1;
  transform: translateX(-75vw);
  transition: 0.2s ease-out; }
  aside > ul {
    line-height: .40rem;
    font-size: .15rem; }
    aside > ul > li {
      display: flex;
      justify-content: space-around;
      align-content: center;
      border-bottom: 1px #f0f0f0 solid; }
      aside > ul > li:hover {
        background: #69d1e9;
        color: #ffffff; }

header {
  height: .40rem;
  background: #29bde0; }

nav {
  margin: .12rem .18rem;
  border: 1px #c9c9c9 solid;
  height: .60rem;
  background: #ffffff;
  white-space: nowrap;
  text-align: center;
  transition: 0.2s ease-out; }
  nav span {
    font-size: .16rem;
    color: #9a9a9a;
    line-height: .60rem; }
  nav img {
    float: right;
    position: relative;
    top: .10rem;
    right: .10rem; }

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 4rem;
  margin: .12rem .18rem;
  border: 1px #c9c9c9 solid;
  color: #9a9a9a;
  background: #ffffff;
  transition: 0.2s ease-out; }
  main > div {
    position: absolute;
    top: 3.05rem;
    right: calc(5% - 12px);
    position: absolute;
    border-style: solid;
    border-width: 20px;
    border-color: transparent transparent transparent #fbb435; }
  main p {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: .40rem;
    margin: 0;
    border-bottom: 1px solid #fbb435;
    font-size: .18rem;
    color: #fbb435; }
  main a {
    margin: .12rem 0;
    border: 0;
    height: .70rem;
    width: 80%;
    text-align: center;
    font-size: .15rem;
    color: #ffffff;
    background: #69d1e9; }
    main a > span {
      line-height: .70rem; }
  main span {
    transform: scale(2); }
    main span span {
      color: #29bde0; }

/*# sourceMappingURL=task13-01.css.map */

该问题已被官方收录

使用checkbox绑定侧边栏后，侧边栏却出现了显示异常

0

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<div class="mmm">
    <div class="m-border"></div>
    <div class="m1">
        <div class="ma">
            <img src="images-task13/1.png" width="24" />
            <span class="ma1">公告</span>
        </div>
        <div class="ma">
            <img src="images-task13/5.png" height="23" width="14"/>
        </div>
    </div>
    <div class="m1">
        <div class="ma">
            <img src="images-task13/2.png" width="24" />
            <span class="ma1">设置</span>
        </div>
        <div class="ma">
            <img src="images-task13/5.png" height="23" width="14"/>
        </div>
    </div>

    <div class="m1">
        <div class="ma">
            <img src="images-task13/3.png" width="24" />
            <span class="ma1">帮助</span>
        </div>
        <div class="ma">
            <img src="images-task13/5.png" height="23" width="14"/>
        </div>
    </div>

    <div class="m1">
        <div class="ma">
            <img src="images-task13/4.png" width="24" />
            <span class="ma1">关于</span>
        </div>
        <div class="ma">
            <img src="images-task13/5.png" height="23" width="14"/>
        </div>
    </div>
</div>

<div class="checkbox1">

    <input type="checkbox" value="1" id="check1" name="" />
    <label for="check1"></label>
</div>
    <div class="nnn">

<div class="head">
    <div class="h-img"></div>
</div>

label {
  @include position(absolute,top,17px,left,25px);
  @include sprite(34px,27px,
          url(images-task13/t.png) -185px -307px no-repeat,
          scale(0.9));
  transition: all .6s ease;
  cursor: pointer;
  z-index: 3;
}
input {
  @include position(absolute,top,0px,left,0px);
}

.checkbox1 {
  @include position(absolute,top,0px,left,0px);
  width: 100%;
  overflow: hidden;
}

.checkbox1 input[type=checkbox]:checked ~ label {
  left: 80%;
}
.checkbox1 input[type=checkbox]:checked ~ .nnn{
  transform: translateX(80%);
}

.nnn {
  @include bg-c(#f0f0f0);
  transition: all .6s ease;
  height: 900px;
  z-index: 2;
}
.mmm {
  position: absolute;
  @include flex(flex,column,flex-start,center);
  @include bg-c(#fff);
  @include font(1.2em,#69D1E9,left,normal);
  @include box(80%,900px);
}
.m1 {
  @include flex(flex,row,space-between,center);
  @include padding(20px 0);
  @include box(100%,20px);
  border-bottom:1px solid #c0c0c0;
}
.ma {
  margin: 0 20px;
}
.ma1 {
  margin-left:15px;
}
.m-border{
  position: absolute;
  @include box(100%,100%);
  border-right:20px solid #29bde0;
}
input[type=checkbox] {
  visibility: hidden;
}

该问题已被官方收录

after怎么垂直居中

0

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

input[type="radio"] + label::before {
    content: "\a0";
    display: inline-block;
    font-size: 18px;
    width: 20px;
    height: 20px;
    margin-right: 10px;
    border-radius: 50%;
    border: 1px solid #d6d6d6;
    background-color: #f8f9fb;
    line-height: 1; 
}
input[type="radio"]:checked + label::before {
    background-color: #1d7ad9;
    border: 1px solid #1d7ad9;
}
input[type="radio"]:checked + label::after{
    content: "";
    background-color: white;
    border: white;
    position: absolute;
    height: 5px;
    width: 5px;
    border-radius: 50%;
    left: 7px;
    top: 7px;
}
input[type="radio"] {
    position: absolute;
    clip: rect(0, 0, 0, 0);
}

该问题已被官方收录

0

1

动画

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<div class="col-md-6 col-lg-4 main-box">
                <div class="main-box-tow">
                    <div class="hide-box">
                        <span class="hide-title">iOS工程师</span>
                        <p class="hind-font">iOS是由苹果公司开发的移动操作系统， iOS和苹果的Mac OS X操作系统一样， 也是以Darwin为基础的， 因此同样属于类Unix的商业操作系统。 国内的iOS开发起步相对较晚， 人才培养机制更是远远跟不上市场发展速度，
                            有限的iOS开发人才成了国内企业必争的资源。 国内的iOS开发起步相对较晚， 人才培养机制更是远远跟不上市场发展速度， 有限的iOS开发人才成了国内企业必争的资源。
                        </p>



.hide-box {
    position: absolute;
    padding: 5rem 12% 2rem 12%;
    text-align: center;
    line-height: 2rem;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    transition: all 2s;
    transform: rotate(0deg);
}

.hide-title {
    display: none;
    text-align: center;
    line-height: 8rem;
}

.hind-font {
    display: none;
    text-align: left;
}

.main-box-tow:hover .hide-box {
    /* display: block;  */
    transform: rotate(360deg);
    color: #fff;
    background: rgba(16, 16, 16, 0.8);
}

.main-box-tow:hover .hide-title {
    display: inline-block;
}

.main-box-tow:hover .hind-font {
    display: inline-block;
}

该问题已被官方收录

做下拉菜单时，发现下拉菜单的宽度会继承row的宽度

0

1

属性

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

/* 第二行右侧下拉选框  */

.down-line {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.down-line button {
    display: inline-flex;
    align-items: center;
    width: 1.27rem;
    height: .37rem;
    border: 1px solid #f2f2f2;
    font-size: .14rem;
    color: #999999;
    background-color: #ffffff;
    outline: none;
}

/* 右侧下拉图标 */

.down-box {
    display: inline-block;
    width: .24rem;
    height: .28rem;
    margin-left: .25rem;
    border-radius: .05rem;
    background: #1d7ad9;
}

.down-box::after {
    content: "";
    position: absolute;
    margin-top: 0.08rem;
    margin-left: -.07rem;
    border-left: .07rem solid transparent;
    border-right: .07rem solid transparent;
    border-top: .12rem solid #ffffff;
}

/*下拉菜单*/

#downlist {
    position: absolute;
    margin: 0;
    padding: 0;
    top: 100%;
    z-index: 1000;
    display: none;
    width: 1.27rem;
    height: 100%;
    list-style: none;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid rgba(0, 0, 0, .15);
}

#downlist.show {
    display: flex;
    justify-content: center;
    align-items: center;
}

#downlist li a {
    display: block;
    padding: 0;
    clear: both;
    color: #212529;
    font-size: .14rem;
    text-decoration: none;
}
html代码
<div class="col-md-3 col-sm-12 view-details">
                    <div class="down-line">
                        <button data-toggle="collapse" data-target="#downlist2">
                            查看详情
                            <span class="down-box"></span>
                        </button>
                        <ul id="downlist2" class="collapse">
                            <li>
                                <a class="" href="#">xxxx</a>
                            </li>
                        </ul>
                    </div>
                </div>

该问题已被官方收录

css有没有办法点击单选按钮使前面的某个元素变色。

0

1

通用

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<nav class="nav">
        <input type="checkbox" id="nav-toggle" class="nav-toggle">
        <label for="nav-toggle">
            <svg xmlns="http://www.w3.org/2000/svg" width="23" height="22">
                <defs>
                    <filter id="shadow">
                        <feDropShadow dx="0" dy="0" stdDeviation="1.6">
                    </filter>
                </defs>
                <polygon points="1,1 22,10 1,20 1,1" fill="#1d7ad9" filter="url(#shadow)"></polygon>
            </svg>
        </label>
        <ul class="nav-list">
            <li>
                <a href="#">首页</a>
            </li>
            <li>
                <a href="#">在线定制</a>
            </li>
            <li>
                <a href="#">标准箱</a>
            </li>
            <li>
                <a href="#">品质保障</a>
            </li>
        </ul>
    </nav>
    <main class="main">
        <div class="step-box">
            <div class="step">
                <div class="circle" id="box-circle">1</div>
                <div class="line" id="box-line"></div>
                <p id="step-one">1.定制纸箱</p>
            </div>
            <div class="step">
                <div class="circle" id="size-circle">2</div>
                <div class="line" id="size-line"></div>
                <p id="step-two">2.选择数量</p>
            </div>
            <div class="step">
                <div class="circle" id="material-circle">3</div>
                <div class="line" id="material-line"></div>
                <p id="step-three">3.上传附件</p>
            </div>
            <div class="step">
                <div class="circle">4</div>
                <div class="line"></div>
                <p>4.确认下单</p>
            </div>
        </div>

.nav{
    display: block;
    padding-top: 20px;
    padding-bottom: 20px;
    padding-right: 15%;
    background-color: #f9f9f9;
}
.nav-list{
    float: right;
    list-style: none;
}
.nav-list li{
    display: inline-block;
    margin-left: 30px;
}
/* .nav-list li a:focus,
.nav-list li a:hover{
    color: #fff;
    background-color: #1d7ad9;
} */
.nav-list li a{
    display: inline-block;
    height: 45px;
    padding-left: 15px;
    padding-right: 15px;
    line-height: 45px;
    text-decoration: none;
    background-color: #fff;
    border-radius: 8px;
    color: #333;
    box-shadow: 0 0 5px 1px #ccc;
}
.nav input:checked~.nav-list{
    display: block;
}
.nav input:checked~label svg{
    transform: rotateZ(90deg);
    transition: width 2s;
}
.nav label{
    display: none;
}
.nav .nav-toggle{
    display: none;
}
.main{
    padding-left: 15%;
    padding-right: 15%;
}
.step-box{
    display: flex;
    justify-content: flex-end;
    text-align: center;
}
 .step:hover div{
    background-color: #ff7f02;
}
.step:hover p{
    color: #ff7f02;
}
.step-box p{
    padding-top: 20px;
}
.line{
    height: 3px;
    width: 10vw;
    border-radius: 2px;
    background-color: #cccccc;
    min-width: 71px;
}
.circle{
    width: 22px;
    height: 22px;
    line-height: 22px;
    border-radius: 50%;
    background-color: #cccccc;
    text-align: center;
    z-index: 1;
    color: #fff;
    position: relative;
    top: 13px;
    left: 50%;
    transform: translateX(-50%);
}
.message{
    line-height: 40px;
    font-weight: bold;
    font-size: 1.8rem;
}
.message span::before{
    content: "";
    display: inline-block;
    vertical-align: text-top;
    margin-right: 5px;
    height: 1.9rem;
    width: 3px;
    border-radius: 2px;
    background-color: #1d7ad9;
}
.choose{
    position: relative;
    padding-left:35px;
    height: 40px;
    line-height: 40px;
    font-weight: bold;
    color: #1d7ad9;
    background-color: #f3f3f3;
    border-left: 1px solid #e8e8e8;
    border-right: 1px solid #e8e8e8;
}
.choose .word-box::before{
    content: "";
    display: inline-block;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    left: 10px;
    width: 15px;
    height: 13px;
    background-image: url(images/box.png);
    background-repeat: no-repeat;
    background-size: contain;
}
.choose .word-size::before{
    content: "";
    display: inline-block;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    left: 10px;
    width: 15px;
    height: 13px;
    background-image: url(images/size.png);
    background-repeat: no-repeat;
    background-size: contain;
}
.choose .word-material::before{
    content: "";
    display: inline-block;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    left: 10px;
    width: 15px;
    height: 13px;
    background-image: url(images/scissors.png);
    background-repeat: no-repeat;
    background-size: contain;
}
.choose-box{
    position: relative;
    padding-top: 30px;
    padding-bottom: 30px;
    background-color: #fbfcff;
    border-left: 1px solid #e8e8e8;
    border-right: 1px solid #e8e8e8;
    border-bottom: 1px solid #e8e8e8;
    z-index: 2;
}
.box-one,.box-two,.box-three{
    display: inline-block;
    margin-left: 30px;
}
.choose-material>div:nth-child(-n+5){
    display: inline-block;
    margin-left: 30px;
}
.choose-size{
    position: relative;
    padding-top: 30px;
    background-color: #fbfcff;
    border: 1px solid #e8e8e8;
    z-index: 1;
}
.size-box{
    display: flex; 
    padding-bottom: 30px;
}
.text-box{
    margin-left: 30px;
}
.choose-material{
    position: relative;
    padding-top: 30px;
    padding-bottom: 30px;
    background-color: #fbfcff;
    border: 1px solid #e8e8e8;
    z-index: 1;
}
input[type="text"]{
    padding: 0;
    height: 18px;
    outline: none;
    border: none;
    border: 1px solid #ccc;
}
.size-one,.size-two{
    margin-left: 30px;
}
label{
    font-weight: normal;
}
input[type="radio"] + .choice::before {
    content: "\a0"; /*不换行空格*/
    display: inline-block;
    vertical-align: middle;
    width: 17px;
    height: 17px;
    margin-right: 12px;
    vertical-align: text-top;
    border-radius: 50%;
    border: 1px solid #d6d6d6;
    background-color: #f8f9fb;
}
input[type="radio"]:checked + .choice::before {
    background-image: url(images/circle.png);
    background-size: contain;
    background-repeat: no-repeat;
    border: none;
}
input[type="radio"] {
    position: absolute;
    clip: rect(0, 0, 0, 0);
}
/* div+js模拟下拉框 */
.select-box{
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%); 
    background: #fff;
}

该问题已被官方收录

为什么display：inline-block水平的下拉菜单会先上升后下降

0

1

布局

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

 <style>
        ul {
            display: inline-block;
            background: red;
            margin: 0;
            max-height: 0;
            overflow: hidden;
            transition: all 5s;
        }

        div {
            background: black;
            color: #fff;
        }
    </style>
</head>

<body>
    <button>点击触发</button>
    <div class="drop-contaienr">
        <ul>
            <li>下拉列表选项</li>
            <li>下拉列表选项</li>
            <li>下拉列表选项</li>
            <li>下拉列表选项</li>
        </ul>
    </div>
    <script>
        var log = console.log;
        var btn = document.querySelector('button'),
            ul = document.querySelector('ul');
        btn.onclick = function () {

            ul.style['max-height'] = '300px';
        }
    </script>

该问题已被官方收录

响应式导航栏的下拉框会把下方的轮播图遮盖掉

1

1

响应式

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
  <div class="container">
    <div class="navbar-header">
      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-menu">
        <span class="sr-only">切换导航</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      <span class="icon-bar"></span>
      </button>
      <a href="#" class="navbar-brand nav-title">YinyouPoet</a>
    </div>
    <div class="collapse navbar-collapse" id="navbar-menu">
      <ul class="nav navbar-nav navbar-right">
        <li class="cative"><a href="#">Home</a></li>
        <li class="cative"><a href="#">About</a></li>
        <li class="cative"><a href="#">Portfolio</a></li>
        <li class="cative"><a href="#">Contact</a></li>
      </ul>
    </div>
  </div>
</nav>

去第页

Copyright ©2015 北京葡萄藤信息技术有限公司 All Rights Reserved | 京ICP备15035574号-1