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同步操作将从 笔下光年/Light Year Admin v4 强制同步，此操作会覆盖自 Fork 仓库以来所做的任何修改，且无法恢复！！！
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<!DOCTYPE html>
<html lang="zh">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=0, minimal-ui">
<meta name="keywords" content="LightYear,LightYearAdmin,光年,后台模板,后台管理系统,光年HTML模板">
<meta name="description" content="Light Year Admin V4是一个基于Bootstrap v4.4.1的后台管理系统的HTML模板。">
<meta name="author" content="yinq">
<title>图片 - 光年(Light Year Admin V4)后台管理系统模板</title>
<link rel="shortcut icon" type="image/x-icon" href="favicon.ico">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-touch-fullscreen" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="default">
<link rel="stylesheet" type="text/css" href="css/materialdesignicons.min.css">
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
<link rel="stylesheet" type="text/css" href="css/animate.min.css">
<link rel="stylesheet" type="text/css" href="css/style.min.css">
</head>
<body>
<!--页面loading-->
<div id="lyear-preloader" class="loading">
<div class="ctn-preloader">
<div class="round_spinner">
<div class="spinner"></div>
<img src="images/loading-logo.png" alt="">
</div>
</div>
</div>
<!--页面loading end-->
<div class="lyear-layout-web">
<div class="lyear-layout-container">
<!--左侧导航-->
<aside class="lyear-layout-sidebar">
<!-- logo -->
<div id="logo" class="sidebar-header">
<a href="index.html"><img src="images/logo-sidebar.png" title="LightYear" alt="LightYear" /></a>
</div>
<div class="lyear-layout-sidebar-info lyear-scroll">
<nav class="sidebar-main">
<ul class="nav-drawer">
<li class="nav-item"> <a href="index.html"><i class="mdi mdi-home"></i> <span>后台首页</span></a> </li>
<li class="nav-item nav-item-has-subnav active open">
<a href="javascript:void(0)"><i class="mdi mdi-palette"></i> <span>UI 元素</span></a>
<ul class="nav nav-subnav">
<li> <a href="lyear_ui_typography.html">排版</a> </li>
<li> <a href="lyear_ui_grid.html">栅格</a> </li>
<li> <a href="lyear_ui_icon.html">图标</a> </li>
<li> <a href="lyear_ui_alerts.html">警告框</a> </li>
<li> <a href="lyear_ui_buttons.html">按钮</a> </li>
<li> <a href="lyear_ui_button_group.html">按钮组</a> </li>
<li> <a href="lyear_ui_cards.html">卡片</a> </li>
<li> <a href="lyear_ui_tables.html">表格</a> </li>
<li> <a href="lyear_ui_modal.html">模态框</a> </li>
<li> <a href="lyear_ui_dropdown.html">下拉菜单</a> </li>
<li> <a href="lyear_ui_tooltips.html">工具提示</a> </li>
<li> <a href="lyear_ui_tabs.html">标签页</a> </li>
<li> <a href="lyear_ui_pagination.html">分页</a> </li>
<li> <a href="lyear_ui_popovers.html">POP提示</a> </li>
<li class="active"> <a href="lyear_ui_images.html">图片</a> </li>
<li> <a href="lyear_ui_badges.html">徽章</a> </li>
<li> <a href="lyear_ui_progress.html">进度条</a> </li>
<li> <a href="lyear_ui_list_group.html">列表组</a> </li>
<li> <a href="lyear_ui_media_object.html">媒体对象</a> </li>
<li> <a href="lyear_ui_navbar.html">导航栏</a> </li>
<li> <a href="lyear_ui_scrollspy.html">滚动监听</a> </li>
<li> <a href="lyear_ui_spinners.html">加载状态</a> </li>
<li> <a href="lyear_ui_toasts.html">消息弹窗</a> </li>
<li> <a href="lyear_ui_timeline.html">时光轴</a> </li>
<li> <a href="lyear_ui_other.html">其他</a> </li>
</ul>
</li>
<li class="nav-item nav-item-has-subnav">
<a href="javascript:void(0)"><i class="mdi mdi-format-align-justify"></i> <span>表单</span></a>
<ul class="nav nav-subnav">
<li> <a href="lyear_forms_elements.html">基本元素</a> </li>
<li> <a href="lyear_forms_input_group.html">输入框组</a> </li>
<li> <a href="lyear_forms_radio.html">单选框</a> </li>
<li> <a href="lyear_forms_checkbox.html">复选框</a> </li>
<li> <a href="lyear_forms_switches.html">开关</a> </li>
<li> <a href="lyear_forms_range.html">范围选择</a> </li>
</ul>
</li>
<li class="nav-item nav-item-has-subnav">
<a href="javascript:void(0)"><i class="mdi mdi-tools"></i> <span>工具类</span></a>
<ul class="nav nav-subnav">
<li> <a href="lyear_utilities_borders.html">边框</a> </li>
<li> <a href="lyear_utilities_colors.html">颜色</a> </li>
<li> <a href="lyear_utilities_display.html">显示属性</a> </li>
<li> <a href="lyear_utilities_flex.html">弹性布局</a> </li>
<li> <a href="lyear_utilities_float.html">浮动</a> </li>
<li> <a href="lyear_utilities_sizing.html">尺寸</a> </li>
<li> <a href="lyear_utilities_spacing.html">间隔</a> </li>
<li> <a href="lyear_utilities_stretched_link.html">延伸链接</a> </li>
<li> <a href="lyear_utilities_text.html">文本</a> </li>
<li> <a href="lyear_utilities_other.html">其他</a> </li>
</ul>
</li>
<li class="nav-item nav-item-has-subnav">
<a href="javascript:void(0)"><i class="mdi mdi-file-outline"></i> <span>示例页面</span></a>
<ul class="nav nav-subnav">
<li> <a href="lyear_pages_doc.html">文档列表</a> </li>
<li> <a href="lyear_pages_gallery.html">图库列表</a> </li>
<li> <a href="lyear_pages_config.html">网站配置</a> </li>
<li> <a href="lyear_pages_rabc.html">设置权限</a> </li>
<li> <a href="lyear_pages_add_doc.html">新增文档</a> </li>
<li> <a href="lyear_pages_guide.html">表单向导</a> </li>
<li> <a href="lyear_pages_data_table.html">表格插件</a> </li>
<li> <a href="lyear_pages_login_1.html" target="_blank">登录页面1</a> </li>
<li> <a href="lyear_pages_login_2.html" target="_blank">登录页面2</a> </li>
<li> <a href="lyear_pages_login_3.html" target="_blank">登录页面3</a> </li>
<li> <a href="lyear_pages_login_4.html" target="_blank">登录页面4</a> </li>
<li> <a href="lyear_pages_error.html" target="_blank">错误页面</a> </li>
</ul>
</li>
<li class="nav-item nav-item-has-subnav">
<a href="javascript:void(0)"><i class="mdi mdi-language-javascript"></i> <span>JS 插件</span></a>
<ul class="nav nav-subnav">
<li> <a href="lyear_js_datepicker.html">日期选取器</a> </li>
<li> <a href="lyear_js_colorpicker.html">选色器</a> </li>
<li> <a href="lyear_js_chartjs.html">Chart.js</a> </li>
<li> <a href="lyear_js_jconfirm.html">对话框</a> </li>
<li> <a href="lyear_js_tags_input.html">标签插件</a> </li>
<li> <a href="lyear_js_notify.html">通知消息</a> </li>
<li> <a href="lyear_js_maxlength.html">长度判断</a> </li>
<li> <a href="lyear_js_select.html">下拉选择</a> </li>
<li> <a href="lyear_js_fullcalendar.html">日程插件</a> </li>
<li> <a href="lyear_js_loading.html">loading插件</a> </li>
</ul>
</li>
<li class="nav-item nav-item-has-subnav">
<a href="javascript:void(0)"><i class="mdi mdi-menu"></i> <span>多级菜单</span></a>
<ul class="nav nav-subnav">
<li> <a href="#!">一级菜单</a> </li>
<li class="nav-item nav-item-has-subnav">
<a href="#!">一级菜单</a>
<ul class="nav nav-subnav">
<li> <a href="#!">二级菜单</a> </li>
<li class="nav-item nav-item-has-subnav">
<a href="#!">二级菜单</a>
<ul class="nav nav-subnav">
<li> <a href="#!">三级菜单</a> </li>
<li> <a href="#!">三级菜单</a> </li>
</ul>
</li>
</ul>
</li>
<li> <a href="#!">一级菜单</a> </li>
</ul>
</li>
</ul>
</nav>
<div class="sidebar-footer">
<p class="copyright">Copyright © 2019. <a target="_blank" href="http://lyear.itshubao.com">IT书包</a> All rights reserved.</p>
</div>
</div>
</aside>
<!--End 左侧导航-->
<!--头部信息-->
<header class="lyear-layout-header">
<nav class="navbar">
<div class="navbar-left">
<div class="lyear-aside-toggler">
<span class="lyear-toggler-bar"></span>
<span class="lyear-toggler-bar"></span>
<span class="lyear-toggler-bar"></span>
</div>
</div>
<ul class="navbar-right d-flex align-items-center">
<li class="dropdown dropdown-notice">
<span data-toggle="dropdown" class="icon-item">
<i class="mdi mdi-bell-outline"></i>
<span class="badge badge-danger">10</span>
</span>
<div class="dropdown-menu dropdown-menu-right">
<div class="lyear-notifications">
<div class="lyear-notifications-title clearfix" data-stopPropagation="true"><a href="#!" class="float-right">查看全部</a>你有 10 条未读消息</div>
<div class="lyear-notifications-info lyear-scroll">
<a href="#!" class="dropdown-item" title="树莓派销量猛增，疫情期间居家工作学习、医疗领域都需要它">树莓派销量猛增，疫情期间居家工作学习、医疗领域都需要它</a>
<a href="#!" class="dropdown-item" title="GNOME 用户体验团队将为 GNOME Shell 提供更多改进">GNOME 用户体验团队将为 GNOME Shell 提供更多改进</a>
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<a href="#!" class="dropdown-item" title="Zend 宣布推出两项 PHP 新产品">Zend 宣布推出两项 PHP 新产品</a>
</div>
</div>
</div>
</li>
<!--切换主题配色-->
<li class="dropdown dropdown-skin">
<span data-toggle="dropdown" class="icon-item"><i class="mdi mdi-palette"></i></span>
<ul class="dropdown-menu dropdown-menu-right" data-stopPropagation="true">
<li class="drop-title"><p>主题</p></li>
<li class="drop-skin-li clearfix">
<span class="inverse">
<input type="radio" name="site_theme" value="default" id="site_theme_1" checked>
<label for="site_theme_1"></label>
</span>
<span>
<input type="radio" name="site_theme" value="dark" id="site_theme_2">
<label for="site_theme_2"></label>
</span>
<span>
<input type="radio" name="site_theme" value="translucent" id="site_theme_3">
<label for="site_theme_3"></label>
</span>
</li>
<li class="drop-title"><p>LOGO</p></li>
<li class="drop-skin-li clearfix">
<span class="inverse">
<input type="radio" name="logo_bg" value="default" id="logo_bg_1" checked>
<label for="logo_bg_1"></label>
</span>
<span>
<input type="radio" name="logo_bg" value="color_2" id="logo_bg_2">
<label for="logo_bg_2"></label>
</span>
<span>
<input type="radio" name="logo_bg" value="color_3" id="logo_bg_3">
<label for="logo_bg_3"></label>
</span>
<span>
<input type="radio" name="logo_bg" value="color_4" id="logo_bg_4">
<label for="logo_bg_4"></label>
</span>
<span>
<input type="radio" name="logo_bg" value="color_5" id="logo_bg_5">
<label for="logo_bg_5"></label>
</span>
<span>
<input type="radio" name="logo_bg" value="color_6" id="logo_bg_6">
<label for="logo_bg_6"></label>
</span>
<span>
<input type="radio" name="logo_bg" value="color_7" id="logo_bg_7">
<label for="logo_bg_7"></label>
</span>
<span>
<input type="radio" name="logo_bg" value="color_8" id="logo_bg_8">
<label for="logo_bg_8"></label>
</span>
</li>
<li class="drop-title"><p>头部</p></li>
<li class="drop-skin-li clearfix">
<span class="inverse">
<input type="radio" name="header_bg" value="default" id="header_bg_1" checked>
<label for="header_bg_1"></label>
</span>
<span>
<input type="radio" name="header_bg" value="color_2" id="header_bg_2">
<label for="header_bg_2"></label>
</span>
<span>
<input type="radio" name="header_bg" value="color_3" id="header_bg_3">
<label for="header_bg_3"></label>
</span>
<span>
<input type="radio" name="header_bg" value="color_4" id="header_bg_4">
<label for="header_bg_4"></label>
</span>
<span>
<input type="radio" name="header_bg" value="color_5" id="header_bg_5">
<label for="header_bg_5"></label>
</span>
<span>
<input type="radio" name="header_bg" value="color_6" id="header_bg_6">
<label for="header_bg_6"></label>
</span>
<span>
<input type="radio" name="header_bg" value="color_7" id="header_bg_7">
<label for="header_bg_7"></label>
</span>
<span>
<input type="radio" name="header_bg" value="color_8" id="header_bg_8">
<label for="header_bg_8"></label>
</span>
</li>
<li class="drop-title"><p>侧边栏</p></li>
<li class="drop-skin-li clearfix">
<span class="inverse">
<input type="radio" name="sidebar_bg" value="default" id="sidebar_bg_1" checked>
<label for="sidebar_bg_1"></label>
</span>
<span>
<input type="radio" name="sidebar_bg" value="color_2" id="sidebar_bg_2">
<label for="sidebar_bg_2"></label>
</span>
<span>
<input type="radio" name="sidebar_bg" value="color_3" id="sidebar_bg_3">
<label for="sidebar_bg_3"></label>
</span>
<span>
<input type="radio" name="sidebar_bg" value="color_4" id="sidebar_bg_4">
<label for="sidebar_bg_4"></label>
</span>
<span>
<input type="radio" name="sidebar_bg" value="color_5" id="sidebar_bg_5">
<label for="sidebar_bg_5"></label>
</span>
<span>
<input type="radio" name="sidebar_bg" value="color_6" id="sidebar_bg_6">
<label for="sidebar_bg_6"></label>
</span>
<span>
<input type="radio" name="sidebar_bg" value="color_7" id="sidebar_bg_7">
<label for="sidebar_bg_7"></label>
</span>
<span>
<input type="radio" name="sidebar_bg" value="color_8" id="sidebar_bg_8">
<label for="sidebar_bg_8"></label>
</span>
</li>
</ul>
</li>
<!--切换主题配色-->
<li class="dropdown dropdown-profile">
<a href="javascript:void(0)" data-toggle="dropdown" class="dropdown-toggle">
<img class="img-avatar img-avatar-48 m-r-10" src="images/users/avatar.jpg" alt="笔下光年" />
<span>笔下光年</span>
</a>
<ul class="dropdown-menu dropdown-menu-right">
<li>
<a class="dropdown-item" href="lyear_pages_profile.html"><i class="mdi mdi-account"></i> 个人信息</a>
</li>
<li>
<a class="dropdown-item" href="lyear_pages_edit_pwd.html"><i class="mdi mdi-lock-outline"></i> 修改密码</a>
</li>
<li>
<a class="dropdown-item" href="javascript:void(0)"><i class="mdi mdi-delete"></i> 清空缓存</a>
</li>
<li class="dropdown-divider"></li>
<li>
<a class="dropdown-item" href="lyear_pages_login_1.html"><i class="mdi mdi-logout-variant"></i> 退出登录</a>
</li>
</ul>
</li>
</ul>
</nav>
</header>
<!--End 头部信息-->
<!--页面主要内容-->
<main class="lyear-layout-content">
<div class="container-fluid p-t-15">
<div class="row">
<div class="col-lg-12">
<div class="card">
<header class="card-header"><div class="card-title">图片</div></header>
<div class="card-body">
<h6>响应式图片</h6>
<p>在Bootstrap中，给图片添加 <code>.img-fluid</code> 样式，或定义 <code>max-width: 100%、height:auto;</code> 样式，即可赋得响应式特性，图片大小会随着父元素大小同步缩放。</p>
<img data-src="holder.js/100px250" class="img-fluid" alt="100%x250" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22832%22%20height%3D%22250%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20832%20250%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_171f8c077e6%20text%20%7B%20fill%3Argba(255%2C255%2C255%2C.75)%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A42pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_171f8c077e6%22%3E%3Crect%20width%3D%22832%22%20height%3D%22250%22%20fill%3D%22%23777%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%22309%22%20y%3D%22144.5%22%3E832x250%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E" data-holder-rendered="true" style="height: 250px; width: 100%; display: block;">
<div class="callout callout-warning mt-3">
<h6>IE 10问题以及SVG图形的特殊处理</h6>
在IE 10浏览器中，带 <code>.img-responsive</code> 类的SVG图片尺寸可能会不均称，这是一个浏览器级的缺陷，你可以在相应图片元素上添加 <code>width: 100% \9</code> 来解决它（<code>width:100% \9</code> 方法不能普遍引用，否则会造成其它图片格式的混乱，所以Bootstrap没有全局自动引用之）。
</div>
<h6 class="mt-3">缩略图处理</h6>
<p>除了我们的边框圆角外，您还可以使用 <code>.img-thumbnail</code> 为图像提供一个1px的圆形边框外观。</p>
<img data-src="holder.js/200x200" class="img-thumbnail" alt="200x200" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22200%22%20height%3D%22200%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20200%20200%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_171f8c077ea%20text%20%7B%20fill%3Argba(255%2C255%2C255%2C.75)%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A10pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_171f8c077ea%22%3E%3Crect%20width%3D%22200%22%20height%3D%22200%22%20fill%3D%22%23777%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%2274%22%20y%3D%22104.8%22%3E200x200%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E" data-holder-rendered="true" style="width: 200px; height: 200px;">
<h6 class="mt-3">图像对齐处理</h6>
<p>对于 <code>.block</code> 属性的块状图片，我们也可以使用 浮动定义规范 或 文字对齐规范，来实现对图像的对齐、浮动控制，带 <code>.block</code> 块属性的图片，可以自动获得 <code>.mx-auto</code> 的位置对齐属性。</p>
<div class="border-example">
<img data-src="holder.js/200x200" class="rounded float-left" alt="200x200" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22200%22%20height%3D%22200%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20200%20200%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_171f8c077ec%20text%20%7B%20fill%3Argba(255%2C255%2C255%2C.75)%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A10pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_171f8c077ec%22%3E%3Crect%20width%3D%22200%22%20height%3D%22200%22%20fill%3D%22%23777%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%2274%22%20y%3D%22104.8%22%3E200x200%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E" data-holder-rendered="true" style="width: 200px; height: 200px;">
<img data-src="holder.js/200x200" class="rounded float-right" alt="200x200" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22200%22%20height%3D%22200%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20200%20200%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_171f8c077ee%20text%20%7B%20fill%3Argba(255%2C255%2C255%2C.75)%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A10pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_171f8c077ee%22%3E%3Crect%20width%3D%22200%22%20height%3D%22200%22%20fill%3D%22%23777%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%2274%22%20y%3D%22104.8%22%3E200x200%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E" data-holder-rendered="true" style="width: 200px; height: 200px;">
</div>
<pre><img src="..." class="rounded float-left" alt="...">
<img src="..." class="rounded float-right" alt="..."></pre>
<div class="border-example">
<img data-src="holder.js/200x200" class="rounded mx-auto d-block" alt="200x200" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22200%22%20height%3D%22200%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20200%20200%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_171f8c077ef%20text%20%7B%20fill%3Argba(255%2C255%2C255%2C.75)%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A10pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_171f8c077ef%22%3E%3Crect%20width%3D%22200%22%20height%3D%22200%22%20fill%3D%22%23777%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%2274%22%20y%3D%22104.8%22%3E200x200%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E" data-holder-rendered="true" style="width: 200px; height: 200px;">
</div>
<pre><img src="..." class="rounded mx-auto d-block" alt="..."></pre>
<div class="border-example">
<div class="text-center">
<img data-src="holder.js/200x200" class="rounded" alt="200x200" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22200%22%20height%3D%22200%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20200%20200%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_171f8c077f1%20text%20%7B%20fill%3Argba(255%2C255%2C255%2C.75)%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A10pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_171f8c077f1%22%3E%3Crect%20width%3D%22200%22%20height%3D%22200%22%20fill%3D%22%23777%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%2274%22%20y%3D%22104.8%22%3E200x200%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E" data-holder-rendered="true" style="width: 200px; height: 200px;">
</div>
</div>
<pre><div class="text-center">
<img src="..." class="rounded" alt="...">
</div></pre>
<h6>Picture元素</h6>
<p>如果使用 <code><picture></code> 元素为特定的 <code><img></code> 指定多个 <code><source&></code> 元素，请确保将 <code>.img-*</code> 类添加到 <code><img></code> 而不是 <code><picture></code> 标记。</p>
<pre><picture>
<source srcset="..." type="image/svg+xml">
<img src="..." class="img-fluid img-thumbnail" alt="...">
</picture></pre>
<p><code><picture></code> 元素可实现图片在不同屏幕下的针对性响应式，其使用逻辑如下：</p>
<pre><picture>
<source src="大规格图片.jpg" media="(min-width: 800px)" >
<source src="中规格图片.jpg" media="(min-width: 600px)">
<source src="小规格图片.jpg">
<img src="通用图片.jpg" alt="这是当浏览器不支持picture标签时显示的图片">
</picture></pre>
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