Flex布局

玉米会开花
126 阅读4分钟

flex.png

flex布局,父级：display:flex

flex-direction:主轴方向，默认主轴X
row 左至右 colum 上至下 reverse翻转

justify-content:设置主轴上的子元素排列方式

flex-start | flex-end | center| space-around平分剩余空间 space-between 先两边贴边 再平分剩余空间

flex-wrap:设置子元素是否换行

默认值不换行nowrap | 换行warp

align-items:设置侧轴上的子元素排列方式（单行）

flex-start上至下 flex-end 下至上 center 挤压居中（垂直居中）stretch 拉伸（默认值）

align-content:设置侧轴上的子元素排列方式（多行）

flex-start | flex-end | center| space-around平分剩余空间 space-between 先两边贴边 再平分剩余空间
stretch 设置子项元素高度平分父元素高度

flex-flow:复合属性，flex-direction和flex-wrap

flex-flow：row wrap;

flex自适应：flex属性定义子项目分配剩余空间，flex来表示占多少份数

.item { flex：;/default 0 默认0/ }

补充

align-self 属性

align-self.png

order 属性

order.png

盒子阴影:水平阴影 垂直阴影 模糊距离 阴影尺寸 颜色 外部阴影（内部阴影） box-shadow:h-shadow blur spread color inset（outset）; box-shadow:10px 10px 10px -4px rgba(0,0,0,0.3)

练习pink老师综合案例《携程在线》

HTML:

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>携程在手，说走就走</title>
    <link rel="stylesheet" href="xc.css" />
    <link rel="icon" href="logo2.png">
</head>

<body>
    <!-- 搜索 -->
    <div class="search-index">
        <div class="search">
            搜索:目的地/酒店/景点/航班号
        </div>
        <div class="user">
            <a href="#">
        我 的
      </a>
        </div>
    </div>
    <!-- 焦点图 -->
    <div class="focus"><img src="upload/focus.jpg" alt="" /></div>
    <!-- 局部导航栏 -->
    <ul class="local-nav">
        <li>
            <a href="#" title="景点·玩乐">
                <span class="local-nav-icon-icon1"></span>
                <span>景点·玩乐</span>
            </a>
        </li>
        <li>
            <a href="#" title="景点·玩乐">
                <span class="local-nav-icon-icon2"></span>
                <span>景点·玩乐</span>
            </a>
        </li>
        <li>
            <a href="#" title="景点·玩乐">
                <span class="local-nav-icon-icon3"></span>
                <span>景点·玩乐</span>
            </a>
        </li>
        <li>
            <a href="#" title="景点·玩乐">
                <span class="local-nav-icon-icon4"></span>
                <span>景点·玩乐</span>
            </a>
        </li>
        <li>
            <a href="#" title="景点·玩乐">
                <span class="local-nav-icon-icon5"></span>
                <span>景点·玩乐</span>
            </a>
        </li>

    </ul>
    <!-- 主导航栏 -->
    <div>
        <div class="nav-common">
            <div class="nav-items">
                <a href="#">海外酒店</a>
            </div>
            <div class="nav-items">
                <a href="#">海外酒店</a>
                <a href="#">特价酒店</a>
            </div>
            <div class="nav-items">
                <a href="#">海外酒店</a>
                <a href="#">特价酒店</a>
            </div>
        </div>
        <div class="nav-common">
            <div class="nav-items">
                <a href="#">海外酒店</a>
            </div>
            <div class="nav-items">
                <a href="#">海外酒店</a>
                <a href="#">特价酒店</a>
            </div>
            <div class="nav-items">
                <a href="#">海外酒店</a>
                <a href="#">特价酒店</a>
            </div>
        </div>
        <div class="nav-common">
            <div class="nav-items">
                <a href="#">海外酒店</a>
            </div>
            <div class="nav-items">
                <a href="#">海外酒店</a>
                <a href="#">特价酒店</a>
            </div>
            <div class="nav-items">
                <a href="#">海外酒店</a>
                <a href="#">特价酒店</a>
            </div>
        </div>
    </div>
    <!-- 侧导航栏 -->
    <ul class="subnav-entry">
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
    </ul>
    <!-- 销售模块 -->
    <div class="sales-box">
        <div class="sales-hd">
            <h2>热门活动</h2>
            <a href="#" class="more">获取更多福利</a>
        </div>
        <div class="row">
            <a href="#"><img src="upload/pic1.jpg" alt=""></a>
            <a href="#"><img src="upload/pic2.jpg" alt=""></a>
        </div>
        <div class="row">
            <a href="#"><img src="upload/pic3.jpg" alt=""></a>
            <a href="#"><img src="upload/pic4.jpg" alt=""></a>
        </div>
        <div class="row">
            <a href="#"><img src="upload/pic5.jpg" alt=""></a>
            <a href="#"><img src="upload/pic6.jpg" alt=""></a>
        </div>
    </div>
</body>

</html>

CSS:

body {
  max-width: 540px;
  min-width: 320px;
  margin: 0 auto;
  font: normal 14px/1.5 Tahoma, "Lucida Grande", Verdana, "Microsoft Yahei";
  color: #000;
  background: #f2f2f2;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

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

a {
  text-decoration: none;
  color: #222;
}

div {
  box-sizing: border-box;
}

/* 搜索模块 */
.search-index {
  display: flex;
  /* 固定定位,重新设置宽度 */
  position: fixed;
  top: 0;
  left: 50%;
  max-width: 540px;
  min-width: 320px;
  width: 100%;
  height: 44px;
  /* 自适应一半的宽度 */
  transform: translate(-50%);
  border-top: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
}
.search {
  position: relative;
  flex: 1;
  margin: 7px 10px;
  padding-left: 25px;
  height: 26px;
  line-height: 24px;
  font-size: 12px;
  color: #666;
  background-color: #fff;
  border: 1px solid #ccc;
  border-radius: 5px;
  box-shadow: 0 2px 4px rgb(0 0 0 / 20%);
}
.search::before {
  content: "";
  position: absolute;
  top: 5px;
  left: 5px;
  width: 15px;
  height: 15px;
  background: url(images/sprite.png) no-repeat -59px -79px;
  background-size: 104px auto;
}
.user {
  height: 44px;
  width: 44px;
  font-size: 12px;
  text-align: center;
  color: #2eaae0;
}
.user::before {
  content: "";
  display: block;
  width: 23px;
  height: 23px;
  background: url(images/sprite.png) no-repeat -59px -194px;
  background-size: 104px auto;
  margin: 4px auto -2px;
}

/* 焦点图 */
.focus {
  padding-top: 44px;
}

.focus img {
  width: 100%;
}

/* 图框 */
.b1 {
  border: 1px solid red;
}

.b2 {
  border: 1px solid blue;
}

.b3 {
  border: 1px solid green;
}
/* 局部导航栏*/

.local-nav {
  display: flex;
  height: 64px;
  margin: 3px 4px;
  background-color: #fff;
  border-radius: 8px;
}

.local-nav li {
  flex: 1;
}

.local-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 12px;
}
.local-nav li [class^="local-nav-icon"] {
  width: 32px;
  height: 32px;
  background-color: pink;
  margin-top: 8px;
  background: url(images/localnav_bg.png) no-repeat 0 0;
  background-size: 32px auto;
}
.local-nav li .local-nav-icon-icon2 {
  background-position: 0 -32px;
}

.local-nav li .local-nav-icon-icon3 {
  background-position: 0 -64px;
}

.local-nav li .local-nav-icon-icon4 {
  background-position: 0 -96px;
}

.local-nav li .local-nav-icon-icon5 {
  background-position: 0 -128px;
}
/* 主导航栏 */
nav {
  overflow: hidden;
  border-radius: 8px;
  margin: 0 4px 3px;
}

.nav-common {
  display: flex;
  height: 88px;
  background-color: pink;
}

.nav-common:nth-child(2) {
  margin: 3px 0;
}

.nav-items {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.nav-items a {
  flex: 1;
  text-align: center;
  line-height: 44px;
  color: #fff;
  font-size: 14px;
  /* 文字阴影 */
  text-shadow: 1px 1px rgba(0, 0, 0, 0.2);
}

.nav-items a:nth-child(1) {
  border-bottom: 1px solid #fff;
}

.nav-items:nth-child(1) a {
  border: 0;
  background: url(/images/hotel.png) no-repeat bottom center;
  background-size: 121px auto;
}
.nav-items:nth-child(-n + 2) {
  border-right: 1px solid #fff;
}

.nav-common:nth-child(1) {
  background: -webkit-linear-gradient(left, #fa5a55, #fa994d);
}

.nav-common:nth-child(2) {
  background: -webkit-linear-gradient(left, #4b90ed, #53bced);
}

.nav-common:nth-child(3) {
  background: -webkit-linear-gradient(left, #34c2a9, #6cd559);
}
/* 侧导航栏 */
.subnav-entry {
  display: flex;
  border-radius: 8px;
  background-color: #fff;
  margin: 0 4px;
  flex-wrap: wrap;
  padding: 5px 0;
}
.subnav-entry li {
  flex: 20%;
}
.subnav-entry a {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.subnav-entry-icon {
  width: 28px;
  height: 28px;
  background-color: pink;
  margin-top: 4px;
  background: url(images/subnav-bg.png) no-repeat;
  background-size: 28px auto;
}
/* 销售模块 */
.sales-hd {
  position: relative;
  height: 31px;
}
.sales-hd h2 {
  position: relative;
  text-indent: -999px;
  overflow: hidden;
}

.sales-hd h2::after {
  position: absolute;
  top: 5px;
  left: 8px;
  content: "";
  width: 79px;
  height: 15px;
  background: url(images/hot.png) no-repeat 0 -20px;
  background-size: 79px auto;
}
.sales-hd a {
  position: absolute;
  top: 0;
  right: 5px;
}
.more {
  position: absolute;
  right: 5px;
  top: 0px;
  background: -webkit-linear-gradient(left, #ff506c, #ff6bc6);
  border-radius: 15px;
  padding: 3px 20px 3px 10px;
  color: #fff;
}

.more::after {
  content: "";
  position: absolute;
  top: 9px;
  right: 9px;
  width: 7px;
  height: 7px;
  border-top: 2px solid #fff;
  border-right: 2px solid #fff;
  transform: rotate(45deg);
}

.row {
  display: flex;
}
.row a {
  flex: 1;
}
.row img {
  width: 100%;
}

1617760980(1).jpg

avatar
文章
阅读
粉丝