Du lärde dig från kapitlet CSS Media Queries att du kan använda mediefrågor för att skapa olika layouter för olika skärmstorlekar och enheter.
Laptop and Desktops:
Mobile
and Tablets:Till exempel, om du vill skapa en layout med två kolumner för de flesta skärmstorlekar, och en layout med en kolumn för små skärmstorlekar (som telefoner och surfplattor) kan du ändra flex-direction
från rad
till kolumn
vid en specifik brytpunkt (800px i exemplet nedan):
.flex-container {
display: flex;
flex-direction: row;
}
/* Responsive layout - makes a one column layout instead of a two-column
layout */
@media (max-width: 800px) {
.flex-container {
flex-direction: column;
}
}
Prova själv →
<!DOCTYPE html>
<html>
<head>
<style>
* {
box-sizing: border-box;
}
.flex-container {
display: flex;
flex-direction: row;
font-size: 30px;
text-align: center;
}
.flex-item-left {
background-color: #f1f1f1;
padding: 10px;
flex: 50%;
}
.flex-item-right {
background-color: dodgerblue;
padding: 10px;
flex: 50%;
}
/* Responsive layout - makes a one column-layout instead of two-column layout */
@media (max-width: 800px) {
.flex-container {
flex-direction: column;
}
}
</style>
</head>
<body>
<h1>Responsive Flexbox</h1>
<p>The "flex-direction: row;" stacks the flex items horizontally (from left to right).</p>
<p>The "flex-direction: column;" stacks the flex items vertically (from top to bottom).</p>
<p><b>Resize the browser window to see that the direction changes when the
screen size is 800px wide or smaller.</b></p>
<div class="flex-container">
<div class="flex-item-left">1</div>
<div class="flex-item-right">2</div>
</div>
</body>
</html>
Ett annat sätt är att ändra procentandelen av egenskapen flex
för flexobjekten att skapa olika layouter för olika skärmstorlekar. Observera att vi måste även inkludera flex-wrap: wrap;
på flexbehållaren för att detta exempel ska arbete:
.flex-container {
display: flex;
flex-wrap: wrap;
}
.flex-item-left {
flex: 50%;
}
.flex-item-right {
flex: 50%;
}
/* Responsive layout - makes a one column layout instead of a two-column
layout */
@media (max-width: 800px) {
.flex-item-right,
.flex-item-left {
flex: 100%;
}
}
Prova själv →
<!DOCTYPE html>
<html>
<head>
<style>
* {
box-sizing: border-box;
}
.flex-container {
display: flex;
flex-wrap: wrap;
font-size: 30px;
text-align: center;
}
.flex-item-left {
background-color: #f1f1f1;
padding: 10px;
flex: 50%;
}
.flex-item-right {
background-color: dodgerblue;
padding: 10px;
flex: 50%;
}
/* Responsive layout - makes a one column-layout instead of a two-column layout */
@media (max-width: 800px) {
.flex-item-right, .flex-item-left {
flex: 100%;
}
}
</style>
</head>
<body>
<h1>Responsive Flexbox</h1>
<p>In this example, we change the percentage of flex to create different layouts for different screen sizes.</p>
<p><b>Resize the browser window to see that the direction changes when the
screen size is 800px wide or smaller.</b></p>
<div class="flex-container">
<div class="flex-item-left">1</div>
<div class="flex-item-right">2</div>
</div>
</body>
</html>
Använd flexbox för att skapa ett responsivt bildgalleri som varierar mellan fyra, två eller fullbreddsbilder, beroende på skärmstorlek:
Prova själv →
<!DOCTYPE html>
<html>
<style>
* {
box-sizing: border-box;
}
body {
margin: 0;
font-family: Arial;
}
.header {
text-align: center;
padding: 32px;
}
.row {
display: flex;
flex-wrap: wrap;
padding: 0 4px;
}
/* Create four equal columns that sits next to each other */
.column {
flex: 25%;
max-width: 25%;
padding: 0 4px;
}
.column img {
margin-top: 8px;
vertical-align: middle;
}
/* Responsive layout - makes a two column-layout instead of four columns */
@media (max-width: 800px) {
.column {
flex: 50%;
max-width: 50%;
}
}
/* Responsive layout - makes the two columns stack on top of each other instead of next to each other */
@media (max-width: 600px) {
.column {
flex: 100%;
max-width: 100%;
}
}
</style>
<body>
<!-- Header -->
<div class="header">
<h1>Responsive Image Gallery</h1>
<p>Resize the browser window to see the responsive effect.</p>
</div>
<!-- Photo Grid -->
<div class="row">
<div class="column">
<img src="/w3images/wedding.jpg" style="width:100%">
<img src="/w3images/rocks.jpg" style="width:100%">
<img src="/w3images/falls2.jpg" style="width:100%">
<img src="/w3images/paris.jpg" style="width:100%">
<img src="/w3images/nature.jpg" style="width:100%">
<img src="/w3images/mist.jpg" style="width:100%">
<img src="/w3images/paris.jpg" style="width:100%">
</div>
<div class="column">
<img src="/w3images/underwater.jpg" style="width:100%">
<img src="/w3images/ocean.jpg" style="width:100%">
<img src="/w3images/wedding.jpg" style="width:100%">
<img src="/w3images/mountainskies.jpg" style="width:100%">
<img src="/w3images/rocks.jpg" style="width:100%">
<img src="/w3images/underwater.jpg" style="width:100%">
</div>
<div class="column">
<img src="/w3images/wedding.jpg" style="width:100%">
<img src="/w3images/rocks.jpg" style="width:100%">
<img src="/w3images/falls2.jpg" style="width:100%">
<img src="/w3images/paris.jpg" style="width:100%">
<img src="/w3images/nature.jpg" style="width:100%">
<img src="/w3images/mist.jpg" style="width:100%">
<img src="/w3images/paris.jpg" style="width:100%">
</div>
<div class="column">
<img src="/w3images/underwater.jpg" style="width:100%">
<img src="/w3images/ocean.jpg" style="width:100%">
<img src="/w3images/wedding.jpg" style="width:100%">
<img src="/w3images/mountainskies.jpg" style="width:100%">
<img src="/w3images/rocks.jpg" style="width:100%">
<img src="/w3images/underwater.jpg" style="width:100%">
</div>
</div>
</body>
</html>
Använd flexbox för att skapa en responsiv webbplats som innehåller ett flexibelt navigeringsfält och flexibelt innehåll:
Prova själv →
<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
* {
box-sizing: border-box;
}
/* Style the body */
body {
font-family: Arial;
margin: 0;
}
/* Header/logo Title */
.header {
padding: 60px;
text-align: center;
background: #1abc9c;
color: white;
}
/* Style the top navigation bar */
.navbar {
display: flex;
background-color: #333;
}
/* Style the navigation bar links */
.navbar a {
color: white;
padding: 14px 20px;
text-decoration: none;
text-align: center;
}
/* Change color on hover */
.navbar a:hover {
background-color: #ddd;
color: black;
}
/* Column container */
.row {
display: flex;
flex-wrap: wrap;
}
/* Create two unequal columns that sits next to each other */
/* Sidebar/left column */
.side {
flex: 30%;
background-color: #f1f1f1;
padding: 20px;
}
/* Main column */
.main {
flex: 70%;
background-color: white;
padding: 20px;
}
/* Fake image, just for this example */
.fakeimg {
background-color: #aaa;
width: 100%;
padding: 20px;
}
/* Footer */
.footer {
padding: 20px;
text-align: center;
background: #ddd;
}
/* Responsive layout - when the screen is less than 700px wide, make the two columns stack on top of each other instead of next to each other */
@media screen and (max-width: 700px) {
.row, .navbar {
flex-direction: column;
}
}
</style>
</head>
<body>
<!-- Note -->
<div style="background:yellow;padding:5px">
<h4 style="text-align:center">Resize the browser window to see the responsive effect.</h4>
</div>
<!-- Header -->
<div class="header">
<h1>My Website</h1>
<p>With a <b>flexible</b> layout.</p>
</div>
<!-- Navigation Bar -->
<div class="navbar">
<a href="#">Link</a>
<a href="#">Link</a>
<a href="#">Link</a>
<a href="#">Link</a>
</div>
<!-- The flexible grid (content) -->
<div class="row">
<div class="side">
<h2>About Me</h2>
<h5>Photo of me:</h5>
<div class="fakeimg" style="height:200px;">Image</div>
<p>Some text about me in culpa qui officia deserunt mollit anim..</p>
<h3>More Text</h3>
<p>Lorem ipsum dolor sit ame.</p>
<div class="fakeimg" style="height:60px;">Image</div><br>
<div class="fakeimg" style="height:60px;">Image</div><br>
<div class="fakeimg" style="height:60px;">Image</div>
</div>
<div class="main">
<h2>TITLE HEADING</h2>
<h5>Title description, Dec 7, 2017</h5>
<div class="fakeimg" style="height:200px;">Image</div>
<p>Some text..</p>
<p>Sunt in culpa qui officia deserunt mollit anim id est laborum consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco.</p>
<br>
<h2>TITLE HEADING</h2>
<h5>Title description, Sep 2, 2017</h5>
<div class="fakeimg" style="height:200px;">Image</div>
<p>Some text..</p>
<p>Sunt in culpa qui officia deserunt mollit anim id est laborum consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco.</p>
</div>
</div>
<!-- Footer -->
<div class="footer">
<h2>Footer</h2>
</div>
</body>
</html>