Html 屏幕大小改变时如何改变CSS
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时间：2020-08-29 14:33:37 来源:igfitidea点击:
How to change CSS when the screen size changes
提问by nenur
So I have looked into code for my website that would changes the css and even the html of certain sections of my code when the screen size changes. What I am looking into as a start is when I put my website into split screen on Windows 10, or on a Mac, I want the header "Some Title" to move to the left side of the header section. I hope that this will help me with changing certain aspects of my website when the screen size changes. My code is below.
所以我研究了我的网站的代码，当屏幕尺寸改变时，它会改变我的代码的某些部分的 css 甚至 html。我开始考虑的是，当我在 Windows 10 或 Mac 上将我的网站放入分屏时，我希望标题“Some Title”移动到标题部分的左侧。我希望这能帮助我在屏幕尺寸发生变化时更改网站的某些方面。我的代码如下。
<!DOCTYPE html>
<head>
<meta charset="UTF-8">
<title>Some Title</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" href= "Logo.png" type="img/SVG" style="width: 100%; height: 100%">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwtheitroadesjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
<link rel = "stylesheet" href="stylesheet.css">
</head>
<body>
<div class="Header" id="myHeader">
<a class = "headerLogo">
<a href="file:///C:/Noah's%20stuff/Home.html" ><h1 style="color:white; font-family: Verdana; font-style: italic; font-size: x-large;
text-align: center; padding-top: 20px">Some Title</h1></a>
<style>
a{text-decoration: none;}
a:hover{
text-decoration:none;
}
</style>
</a>
<div class="socialmedia">
<a class = "Facebook">
<a href="https://www.facebook.com/" target="_blank"><img src = "https://images.seeklogo.net/2016/09/facebook-icon-preview-1.png" width="50px" height="50px"></a>
</a>
<a class = "Instagram">
<a href="https://www.instagram.com/"><img src = "https://images.seeklogo.net/2016/06/Instagram-logo.png" width="50px" height="50px"></a>
</a>
<a class = "Youtube">
<a href="https://www.youtube.com/channel/" target="_blank"><img src = "https://images.seeklogo.net/2016/06/YouTube-icon.png" width="50px" height="50px"></a>
</a>
<a class = preorder>
<button style = "background-color: white;">Pre-Order</button>
</a>
</div>
</div>
My CSS
body {
margin: 0;
}
.Header {
position: fixed;
z-index:1;
width: 100%;
height: 70px;
background-color: black;
text-align: right;
}
.headerLogo {
}
.socialmedia {
position: fixed;
right: 100px;
top: 35px;
transform: translate(0, -50%);
display: flex;
/* add this */
align-items: center;
/* add this */
}
.preorder button {
background-color: white;
border: 0;
height: 35px;
width: 110px;
margin-left: 35px;
}
.footer {
display: flex;
align-items: center;
width: 100%;
height: 90px;
background-color: black;
}
.img-fluid{
width: inherit;
height: 782px;
}
.mySlides~.mySlides {
position: absolute;
top: 0;
left: 100%;
transition: 0.7s;
}回答by Ricardo Enrique Ibarra Cabrera
Media queries can help you to define different styles for different screen sizes. Also, I'd recommend a different accomodation of HTML items, e.g.:
媒体查询可以帮助您为不同的屏幕尺寸定义不同的样式。另外，我建议使用不同的 HTML 项目，例如：
<!DOCTYPE html>
<head>
<meta charset="UTF-8">
<title>Some Title</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" href= "Logo.png" type="img/SVG" style="width: 100%; height: 100%">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwtheitroadesjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
<style>
body {
margin: 0;
}
.Header {
background-color: black;
text-align: right;
}
.socialmedia {
transform: translate(0, -50%);
align-items: center;
}
.socialmedia a{
display:inline;
}
h1 {
color:white;
font-family: Verdana;
font-style: italic;
font-size: x-large;
text-align: center; padding-top: 20px;
}
@media (max-width:700px){
.headerLogo h1 {
text-align:left;
}
}
@media (min-width:1000px){
.socialmedia {
margin-right:100px;
}
}
.preorder button {
background-color: white;
border: 0;
height: 35px;
width: 110px;
margin-left: 35px;
}
.footer {
display: flex;
align-items: center;
width: 100%;
height: 90px;
background-color: black;
}
.img-fluid{
width: inherit;
height: 782px;
}
.mySlides~.mySlides {
position: absolute;
top: 0;
left: 100%;
transition: 0.7s;
}
a{text-decoration: none;}
a:hover{
text-decoration:none;
}
</style>
</head>
<body>
<div class="Header" id="myHeader">
<a class="headerLogo" href="file:///C:/Noah's%20stuff/Home.html" ><h1>Some Title</h1></a>
<div class="socialmedia">
<a class="Facebook" href="https://www.facebook.com/" target="_blank"><img src = "https://images.seeklogo.net/2016/09/facebook-icon-preview-1.png" width="50px" height="50px"></a>
<a class="Instagram" href="https://www.instagram.com/"><img src = "https://images.seeklogo.net/2016/06/Instagram-logo.png" width="50px" height="50px"></a>
<a class="Youtube" href="https://www.youtube.com/channel/" target="_blank"><img src = "https://images.seeklogo.net/2016/06/YouTube-icon.png" width="50px" height="50px"></a>
<button style = "background-color: white;">Pre-Order</button>
</div>
</div>
</body>
</html>
When screen size < 700px then text will align to the left, and when screen size is >= 1000 then social media box will add a margin to the right.
当屏幕尺寸 < 700px 时，文本将向左对齐，当屏幕尺寸 >= 1000 时，社交媒体框将在右侧添加边距。
回答by Tamas B.
Example
例子
@media screen and (max-width: 600px){
ul.topnav li.right,
ul.topnav li {float: none;}
.seged{position: relative;}
#lab{border-right: 0px;}
}
回答by singhkumarhemant
Well we can do this in two ways:-
那么我们可以通过两种方式做到这一点：-
1) Using media queries. please refer here
1) 使用媒体查询。请参考这里
2) You can also achieve this using simple JavaScript. See Below:-
2) 您也可以使用简单的 JavaScript 来实现这一点。见下文：-
$(window).on('resize', function() {
if($(window).width() > 600) {
$('#body').addClass('limit1200');
$('#body').removeClass('limit400');
}
else {
$('#body').addClass('limit400');
$('#body').removeClass('limit1200');
}
}).limit400 h1 { font-size:12px; }
.limit1200 h1 { font-size:50px; }<div id="body" class="limit400">
<h1>Hello :Professor</h1>
<span>[ change the screen width to understant the effect ]</span>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>I have also created a demo on codepen. See This
我还在 codepen 上创建了一个演示。看到这个
Thanks for bearing with me.
谢谢你陪我。
回答by sn3ll
As mentioned in the comments, you want media queries:
正如评论中提到的，您需要媒体查询：
@media (max-width: 800px) {
h1 {
text-align: left !important;
}
}<!DOCTYPE html>
<head>
<meta charset="UTF-8">
<title>Some Title</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" href= "Logo.png" type="img/SVG" style="width: 100%; height: 100%">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwtheitroadesjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
<link rel = "stylesheet" href="stylesheet.css">
</head>
<body>
<div class="Header" id="myHeader">
<a class = "headerLogo">
<a href="file:///C:/Noah's%20stuff/Home.html" ><h1 style="color:blue; font-family: Verdana; font-style: italic; font-size: x-large;
text-align: center; padding-top: 20px">Some Title</h1></a>
<style>
a{text-decoration: none;}
a:hover{
text-decoration:none;
}
</style>
</a>
<div class="socialmedia">
<a class = "Facebook">
<a href="https://www.facebook.com/" target="_blank"><img src = "https://images.seeklogo.net/2016/09/facebook-icon-preview-1.png" width="50px" height="50px"></a>
</a>
<a class = "Instagram">
<a href="https://www.instagram.com/"><img src = "https://images.seeklogo.net/2016/06/Instagram-logo.png" width="50px" height="50px"></a>
</a>
<a class = "Youtube">
<a href="https://www.youtube.com/channel/" target="_blank"><img src = "https://images.seeklogo.net/2016/06/YouTube-icon.png" width="50px" height="50px"></a>
</a>
<a class = preorder>
<button style = "background-color: white;">Pre-Order</button>
</a>
</div>
</div>
My CSS
body {
margin: 0;
}
.Header {
position: fixed;
z-index:1;
width: 100%;
height: 70px;
background-color: black;
text-align: right;
}
.headerLogo {
}
.socialmedia {
position: fixed;
right: 100px;
top: 35px;
transform: translate(0, -50%);
display: flex;
/* add this */
align-items: center;
/* add this */
}
.preorder button {
background-color: white;
border: 0;
height: 35px;
width: 110px;
margin-left: 35px;
}
.footer {
display: flex;
align-items: center;
width: 100%;
height: 90px;
background-color: black;
}
.img-fluid{
width: inherit;
height: 782px;
}
.mySlides~.mySlides {
position: absolute;
top: 0;
left: 100%;
transition: 0.7s;
}