CSS:搜索框将根据Windows大小使用Flexbox自动调整大小
我想设计一个如下图所示的布局:
在这个布局中,这是我的标题.黑色矩形是一些固定宽度的组件(按钮,链接...),红色矩形是我的搜索表单.
我想当用户更改浏览器窗口的大小时,搜索表单会更小(宽度),直到某个值,会出现水平滚动条.也许困难的部分是:我不知道如何在CSS中解决"自动调整大小".
这是我的示例代码:
我的HTML:
<!--[if lt IE 7 ]> <html class="ie6"> <![endif]-->
<!--[if IE 7 ]> <html class="ie7"> <![endif]-->
<!--[if IE 8 ]> <html class="ie8"> <![endif]-->
<!--[if IE 9 ]> <html class="ie9"> <![endif]-->
<!--[if (gt IE 9)|!(IE)]><!--> <html class=""> <!--<![endif]-->
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Title Here</title>
<link type="text/css" rel="stylesheet" href="css/application.css">
<script src="javascripts/pace.js"></script>
</head>
<body>
<header class="page-head">
<div class="wrapper">
<div class="logo"></div>
<form class="form-search" action="#" onsubmit="return false" method="get" name="search_form">
<div class="search-box"></div>
</form>
<nav class="site-nav">
<span><a href="/" class="site-nav__home"></a></span>
<div class="site-nav__item">Home</div>
<div class="site-nav__item">Notifications</div>
<div class="site-nav__item">Profile</div>
<div class="site-nav__button">Add Question</div>
</nav>
</div>
</header>
</body>
</html>
我的CSS:
.html {
box-sizing: border-box;
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
*, *:before, *:after {
box-sizing: inherit;
}
.page-head {
position: fixed;
top: 0;
left: 0;
height: 45px;
width: 100%;
font-size: 14px;
color: #fff;
}
.page-head.wrapper {
width: 1020px;
margin: 0 auto;
/* center horizontally. apply for block level element */
border-bottom: 1px solid #ddd;
/* drop shadow effect */
box-shadow: 0 3px 5px -3px rgba(200, 200, 200, 0.3);
height: 45px;
display: flex;
flex-direction: row;
}
form {
display: block;
}
.logo {
width: 45px;
height: 45px;
background: red;
}
.form-search {
margin: 0;
float: none;
position: static;
height: 27px;
background-image: url(../images/search.png);
}
.search-box {
border-radius: 2px;
-webkit-font-smoothing: antialiased;
margin-top: 0;
padding: 5px;
padding-left: 26px;
float: none;
width: 100%;
height: 27px;
font-size: 15px;
line-height: normal;
background: #eee;
}
.site-nav {
display: flex;
flex-direction: row;
z-index: 1;
margin-left: 20px;
}
.site-nav__item {
display: block;
height: 45px;
color: #666;
padding: 0 16px;
background-repeat: no-repeat;
background-position: 10px center;
border-bottom: 1px solid transparent;
}
请告诉我如何使用CSS设计此布局.如果可能的话,如何使用Flexbox？
谢谢 :)
Flexbox很好地解决了这个问题。基本上，您希望搜索框（或其表单元素）填充可用空间并在窗口大小减小时根据需要缩小（直到特定点）。
秘诀是给表单元素一个flex-grow: 1告诉它填充可用空间。
html {
font-family: Arial, Helvetica, sans-serif;
}
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
.page-head {
display: flex;
align-items: center; /* Makes the nav items and logo appear vertically centered with the search box*/
margin: 1.5rem;
}
.logo {
/* Prevent logo from shrinking
so it doesn't collide when window gets narrow. */
flex-shrink: 0;
}
.search-form {
margin: 0 1rem;
flex-grow: 1; /* <-- THE SECRET SAUCE! */
min-width: 18rem;
}
.search-box {
width: 100%;
padding: .4rem;
background-color: #ffb;
}
.site-nav > ul {
display: flex;
margin: 0;
}
.site-nav__item {
/* Prevent nav items from shrinking
so they won't collide when window gets narrow. */
flex-shrink: 0;
list-style-type: none;
margin: 0 .55rem;
cursor: pointer;
/* Prevent multi-word nav items from wrapping. */
white-space: nowrap;
}<header class="page-head">
<div class="logo">Logo</div>
<form class="search-form">
<input type="text" class="search-box"
placeholder="Search (this form fills available space)">
</form>
<nav class="site-nav">
<ul>
<li class="site-nav__item">Home</li>
<li class="site-nav__item">Notifications</li>
<li class="site-nav__item">Profile</li>
<li class="site-nav__item">Add Question</li>
</ul>
</nav>
</header>