Erfahren Sie, wie Sie Bilder mit CSS formatieren.
Verwenden Sie die Eigenschaft border-radius
, um abgerundete Bilder zu erstellen:
Abgerundetes Bild:
img {
border-radius: 8px;
}
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
img {
border-radius: 8px;
}
</style>
</head>
<body>
<h2>Rounded Image</h2>
<p>Use the border-radius property to create rounded images:</p>
<img src="paris.jpg" alt="Paris" width="300" height="300">
</body>
</html>
Eingekreistes Bild:
img {
border-radius: 50%;
}
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
img {
border-radius: 50%;
}
</style>
</head>
<body>
<h2>Circled Image</h2>
<p>Use the border-radius property to create circled images:</p>
<img src="paris.jpg" alt="Paris" width="300" height="300">
</body>
</html>
Verwenden Sie die Eigenschaft border
, um Miniaturbilder zu erstellen.
Vorschaubild:
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
img {
border: 1px solid #ddd;
border-radius: 4px;
padding: 5px;
width: 150px;
}
</style>
</head>
<body>
<h2>Thumbnail Image</h2>
<p>Use the border property to create thumbnail images:</p>
<img src="paris.jpg" alt="Paris" style="width:150px">
</body>
</html>
Miniaturbild als Link:
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
img {
border: 1px solid #ddd;
border-radius: 4px;
padding: 5px;
width: 150px;
}
img:hover {
box-shadow: 0 0 2px 1px rgba(0, 140, 186, 0.5);
}
</style>
</head>
<body>
<h2>Thumbnail Image as Link</h2>
<p>Use the border property to create thumbnail images. Wrap an anchor around the image to use it as a link.</p>
<p>Hover over the image and click on it to see the effect.</p>
<a target="_blank" href="paris.jpg">
<img src="paris.jpg" alt="Paris" style="width:150px">
</a>
</body>
</html>
Responsive Bilder passen sich automatisch an die Größe des Bildschirms an.
Ändern Sie die Größe des Browserfensters, um den Effekt zu sehen:
Wenn Sie möchten, dass ein Bild bei Bedarf verkleinert, aber niemals größer als seine Originalgröße skaliert wird, fügen Sie Folgendes hinzu:
img {
max-width: 100%;
height:
auto;
}
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
img {
max-width: 100%;
height: auto;
}
</style>
</head>
<body>
<h2>Responsive Image</h2>
<p>Responsive images will automatically adjust to fit the size of the screen.</p>
<p>Resize the browser window to see the effect:</p>
<img src="img_5terre_wide.jpg" alt="Cinque Terre" width="1000" height="300">
</body>
</html>
Tipp: Lesen Sie mehr über Responsive Webdesign in unserem CSS-RWD-Tutorial.
Um ein Bild zu zentrieren, stellen Sie den linken und rechten Rand auf auto
ein und machen Sie daraus ein Block
-Element:
img {
display: block;
margin-left: auto;
margin-right: auto;
width: 50%;
}
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
img {
display: block;
margin-left: auto;
margin-right: auto;
}
</style>
</head>
<body>
<h2>Center an Image</h2>
<p>To center an image, set left and right margin to auto, and make it into a block element.</p>
<img src="paris.jpg" alt="Paris" style="width:50%">
</body>
</html>
Cinque Terre
Nordlichter
div.polaroid {
width: 80%;
background-color: white;
box-shadow: 0 4px 8px 0 rgba(0,
0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
img {width: 100%}
div.container {
text-align: center;
padding: 10px 20px;
}
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
body {margin:25px;}
div.polaroid {
width: 80%;
background-color: white;
box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
margin-bottom: 25px;
}
div.container {
text-align: center;
padding: 10px 20px;
}
</style>
</head>
<body>
<h2>Responsive Polaroid Images / Cards</h2>
<div class="polaroid">
<img src="img_5terre.jpg" alt="5 Terre" style="width:100%">
<div class="container">
<p>Cinque Terre</p>
</div>
</div>
<div class="polaroid">
<img src="lights600x400.jpg" alt="Norther Lights" style="width:100%">
<div class="container">
<p>Northern Lights</p>
</div>
</div>
</body>
</html>
Die Eigenschaft opacity
kann einen Wert zwischen 0,0 und 1,0 annehmen. Je niedriger der Wert, desto transparenter:
Deckkraft 0,2
Deckkraft 0,5
Deckkraft 1
(Standard)
img {
opacity: 0.5;
}
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
img {
opacity: 0.5;
}
</style>
</head>
<body>
<h1>Image Transparency</h1>
<p>The opacity property specifies the transparency of an element. The lower the value, the more transparent:</p>
<p>Image with 50% opacity:</p>
<img src="img_forest.jpg" alt="Forest" width="170" height="100">
</body>
</html>
So positionieren Sie Text in einem Bild:
Versuch es selber:
Oben links →
<!DOCTYPE html>
<html>
<head>
<style>
.container {
position: relative;
}
.topleft {
position: absolute;
top: 8px;
left: 16px;
font-size: 18px;
}
img {
width: 100%;
height: auto;
opacity: 0.3;
}
</style>
</head>
<body>
<h2>Image Text</h2>
<p>Add some text to an image in the top left corner:</p>
<div class="container">
<img src="img_5terre_wide.jpg" alt="Cinque Terre" width="1000" height="300">
<div class="topleft">Top Left</div>
</div>
</body>
</html>
Oben rechts →
<!DOCTYPE html>
<html>
<head>
<style>
.container {
position: relative;
}
.topright {
position: absolute;
top: 8px;
right: 16px;
font-size: 18px;
}
img {
width: 100%;
height: auto;
opacity: 0.3;
}
</style>
</head>
<body>
<h2>Image Text</h2>
<p>Add some text to an image in the top right corner:</p>
<div class="container">
<img src="img_5terre_wide.jpg" alt="Cinque Terre" width="1000" height="300">
<div class="topright">Top Right</div>
</div>
</body>
</html>
Unten links →
<!DOCTYPE html>
<html>
<head>
<style>
.container {
position: relative;
}
.bottomleft {
position: absolute;
bottom: 8px;
left: 16px;
font-size: 18px;
}
img {
width: 100%;
height: auto;
opacity: 0.3;
}
</style>
</head>
<body>
<h2>Image Text</h2>
<p>Add some text to an image in the bottom left corner:</p>
<div class="container">
<img src="img_5terre_wide.jpg" alt="Cinque Terre" width="1000" height="300">
<div class="bottomleft">Bottom Left</div>
</div>
</body>
</html>
Unten rechts →
<!DOCTYPE html>
<html>
<head>
<style>
.container {
position: relative;
}
.bottomright {
position: absolute;
bottom: 8px;
right: 16px;
font-size: 18px;
}
img {
width: 100%;
height: auto;
opacity: 0.3;
}
</style>
</head>
<body>
<h2>Image Text</h2>
<p>Add some text to an image in the bottom right corner:</p>
<div class="container">
<img src="img_5terre_wide.jpg" alt="Cinque Terre" width="1000" height="300">
<div class="bottomright">Bottom Right</div>
</div>
</body>
</html>
Zentriert →
<!DOCTYPE html>
<html>
<head>
<style>
.container {
position: relative;
}
.center {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
font-size: 18px;
}
img {
width: 100%;
height: auto;
opacity: 0.3;
}
</style>
</head>
<body>
<h2>Image Text</h2>
<p>Center text in image:</p>
<div class="container">
<img src="img_5terre_wide.jpg" alt="Cinque Terre" width="1000" height="300">
<div class="center">Centered</div>
</div>
</body>
</html>
Die CSS-Eigenschaft filter
fügt einem Element visuelle Effekte (wie Unschärfe und Sättigung) hinzu.
Hinweis: Die Filtereigenschaft wird in Internet Explorer oder Edge 12 nicht unterstützt.
Ändern Sie die Farbe aller Bilder in Schwarzweiß (100 % Grau):
img {
filter: grayscale(100%);
}
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
body {
background-color:white;
}
img {
width: 33%;
height: auto;
float: left;
max-width: 235px;
}
.blur {filter: blur(4px);}
.brightness {filter: brightness(250%);}
.contrast {filter: contrast(180%);}
.grayscale {filter: grayscale(100%);}
.huerotate {filter: hue-rotate(180deg);}
.invert {filter: invert(100%);}
.opacity {filter: opacity(50%);}
.saturate {filter: saturate(7);}
.sepia {filter: sepia(100%);}
.shadow {filter: drop-shadow(8px 8px 10px green);}
</style>
</head>
<body>
<h2>Image Filters</h2>
<p><strong>Note:</strong> The filter property is not supported in Internet Explorer or Edge 12.</p>
<img src="pineapple.jpg" alt="Pineapple" width="300" height="300">
<img class="blur" src="pineapple.jpg" alt="Pineapple" width="300" height="300">
<img class="brightness" src="pineapple.jpg" alt="Pineapple" width="300" height="300">
<img class="contrast" src="pineapple.jpg" alt="Pineapple" width="300" height="300">
<img class="grayscale" src="pineapple.jpg" alt="Pineapple" width="300" height="300">
<img class="huerotate" src="pineapple.jpg" alt="Pineapple" width="300" height="300">
<img class="invert" src="pineapple.jpg" alt="Pineapple" width="300" height="300">
<img class="opacity" src="pineapple.jpg" alt="Pineapple" width="300" height="300">
<img class="saturate" src="pineapple.jpg" alt="Pineapple" width="300" height="300">
<img class="sepia" src="pineapple.jpg" alt="Pineapple" width="300" height="300">
<img class="shadow" src="pineapple.jpg" alt="Pineapple" width="300" height="300">
</body>
</html>
Tipp: Besuchen Sie unsere CSS-Filter-Referenz, um mehr über CSS-Filter zu erfahren.
Erstellen Sie einen Overlay-Effekt beim Hover:
Text einblenden:
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
.container {
position: relative;
width: 50%;
}
.image {
display: block;
width: 100%;
height: auto;
}
.overlay {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
height: 100%;
width: 100%;
opacity: 0;
transition: .5s ease;
background-color: #008CBA;
}
.container:hover .overlay {
opacity: 1;
}
.text {
color: white;
font-size: 20px;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
-ms-transform: translate(-50%, -50%);
}
</style>
</head>
<body>
<h2>Fade in Overlay</h2>
<div class="container">
<img src="img_avatar.png" alt="Avatar" class="image">
<div class="overlay">
<div class="text">Hello World</div>
</div>
</div>
</body>
</html>
In einer Box einblenden:
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
.container {
position: relative;
width: 50%;
}
.image {
opacity: 1;
display: block;
width: 100%;
height: auto;
transition: .5s ease;
backface-visibility: hidden;
}
.middle {
transition: .5s ease;
opacity: 0;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
-ms-transform: translate(-50%, -50%)
}
.container:hover .image {
opacity: 0.3;
}
.container:hover .middle {
opacity: 1;
}
.text {
background-color: #4CAF50;
color: white;
font-size: 16px;
padding: 16px 32px;
}
</style>
</head>
<body>
<h2>Fade in a Box</h2>
<div class="container">
<img src="img_avatar.png" alt="Avatar" class="image" style="width:100%">
<div class="middle">
<div class="text">John Doe</div>
</div>
</div>
</body>
</html>
Einschieben (oben):
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
.container {
position: relative;
width: 50%;
}
.image {
display: block;
width: 100%;
height: auto;
}
.overlay {
position: absolute;
bottom: 100%;
left: 0;
right: 0;
background-color: #008CBA;
overflow: hidden;
width: 100%;
height: 0;
transition: .5s ease;
}
.container:hover .overlay {
bottom: 0;
height: 100%;
}
.text {
white-space: nowrap;
color: white;
font-size: 20px;
position: absolute;
overflow: hidden;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
-ms-transform: translate(-50%, -50%);
}
</style>
</head>
<body>
<h2>Slide in Overlay from the Top</h2>
<div class="container">
<img src="img_avatar.png" alt="Avatar" class="image">
<div class="overlay">
<div class="text">Hello World</div>
</div>
</div>
</body>
</html>
Einschieben (unten):
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
.container {
position: relative;
width: 50%;
}
.image {
display: block;
width: 100%;
height: auto;
}
.overlay {
position: absolute;
bottom: 0;
left: 0;
right: 0;
background-color: #008CBA;
overflow: hidden;
width: 100%;
height: 0;
transition: .5s ease;
}
.container:hover .overlay {
height: 100%;
}
.text {
white-space: nowrap;
color: white;
font-size: 20px;
position: absolute;
overflow: hidden;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
-ms-transform: translate(-50%, -50%);
}
</style>
</head>
<body>
<h2>Slide in Overlay from the Bottom</h2>
<div class="container">
<img src="img_avatar.png" alt="Avatar" class="image">
<div class="overlay">
<div class="text">Hello World</div>
</div>
</div>
</body>
</html>
Einschieben (links):
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
.container {
position: relative;
width: 50%;
}
.image {
display: block;
width: 100%;
height: auto;
}
.overlay {
position: absolute;
bottom: 0;
left: 0;
right: 0;
background-color: #008CBA;
overflow: hidden;
width: 0;
height: 100%;
transition: .5s ease;
}
.container:hover .overlay {
width: 100%;
}
.text {
white-space: nowrap;
color: white;
font-size: 20px;
position: absolute;
overflow: hidden;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
-ms-transform: translate(-50%, -50%);
}
</style>
</head>
<body>
<h2>Slide in Overlay from the Left</h2>
<div class="container">
<img src="img_avatar.png" alt="Avatar" class="image">
<div class="overlay">
<div class="text">Hello World</div>
</div>
</div>
</body>
</html>
Einschieben (rechts):
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
.container {
position: relative;
width: 50%;
}
.image {
display: block;
width: 100%;
height: auto;
}
.overlay {
position: absolute;
bottom: 0;
left: 100%;
right: 0;
background-color: #008CBA;
overflow: hidden;
width: 0;
height: 100%;
transition: .5s ease;
}
.container:hover .overlay {
width: 100%;
left: 0;
}
.text {
white-space: nowrap;
color: white;
font-size: 20px;
position: absolute;
overflow: hidden;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
-ms-transform: translate(-50%, -50%);
}
</style>
</head>
<body>
<h2>Slide in Overlay from the Right</h2>
<div class="container">
<img src="img_avatar.png" alt="Avatar" class="image">
<div class="overlay">
<div class="text">Hello World</div>
</div>
</div>
</body>
</html>
Bewegen Sie Ihre Maus über das Bild:
img:hover {
transform: scaleX(-1);
}
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
img:hover {
transform: scaleX(-1);
}
</style>
</head>
<body>
<h2>Flip an Image</h2>
<p>Move your mouse over the image.</p>
<img src="paris.jpg" alt="Paris" width="400" height="300">
</body>
</html>
Mit CSS können Bildergalerien erstellt werden. In diesem Beispiel werden Medienabfragen verwendet, um die Bilder auf verschiedenen Bildschirmgrößen neu anzuordnen. Ändern Sie die Größe des Browserfensters, um den Effekt zu sehen:
.responsive {
padding: 0 6px;
float: left;
width: 24.99999%;
}
@media only screen and
(max-width: 700px){
.responsive {
width: 49.99999%;
margin: 6px
0;
}
}
@media only screen and (max-width: 500px){
.responsive {
width: 100%;
}
}
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
div.gallery {
border: 1px solid #ccc;
}
div.gallery:hover {
border: 1px solid #777;
}
div.gallery img {
width: 100%;
height: auto;
}
div.desc {
padding: 15px;
text-align: center;
}
* {
box-sizing: border-box;
}
.responsive {
padding: 0 6px;
float: left;
width: 24.99999%;
}
@media only screen and (max-width: 700px) {
.responsive {
width: 49.99999%;
margin: 6px 0;
}
}
@media only screen and (max-width: 500px) {
.responsive {
width: 100%;
}
}
.clearfix:after {
content: "";
display: table;
clear: both;
}
</style>
</head>
<body>
<h2>Responsive Image Gallery</h2>
<h4>Resize the browser window to see the effect.</h4>
<div class="responsive">
<div class="gallery">
<a target="_blank" href="img_5terre.jpg">
<img src="img_5terre.jpg" alt="Cinque Terre" width="600" height="400">
</a>
<div class="desc">Add a description of the image here</div>
</div>
</div>
<div class="responsive">
<div class="gallery">
<a target="_blank" href="img_forest.jpg">
<img src="img_forest.jpg" alt="Forest" width="600" height="400">
</a>
<div class="desc">Add a description of the image here</div>
</div>
</div>
<div class="responsive">
<div class="gallery">
<a target="_blank" href="img_lights.jpg">
<img src="img_lights.jpg" alt="Northern Lights" width="600" height="400">
</a>
<div class="desc">Add a description of the image here</div>
</div>
</div>
<div class="responsive">
<div class="gallery">
<a target="_blank" href="img_mountains.jpg">
<img src="img_mountains.jpg" alt="Mountains" width="600" height="400">
</a>
<div class="desc">Add a description of the image here</div>
</div>
</div>
<div class="clearfix"></div>
<div style="padding:6px;">
<p>This example use media queries to re-arrange the images on different screen sizes: for screens larger than 700px wide, it will show four images side by side, for screens smaller than 700px, it will show two images side by side. For screens smaller than 500px, the images will stack vertically (100%).</p>
<p>You will learn more about media queries and responsive web design later in our CSS Tutorial.</p>
</div>
</body>
</html>
Tipp: Lesen Sie mehr über Responsive Webdesign in unserem CSS-RWD-Tutorial.
Dies ist ein Beispiel, um zu zeigen, wie CSS und JavaScript zusammenarbeiten können.
Erstellen Sie zunächst mit CSS ein modales Fenster (Dialogfeld) und blenden Sie es aus Standard.
Verwenden Sie dann ein JavaScript, um das modale Fenster anzuzeigen und das Bild innerhalb des modalen Fensters anzuzeigen, wenn ein Benutzer auf das Bild klickt:
// Get the modal
var modal = document.getElementById('myModal');
// Get the image and insert it
inside the modal - use its "alt" text as a caption
var img =
document.getElementById('myImg');
var modalImg = document.getElementById("img01");
var captionText = document.getElementById("caption");
img.onclick =
function(){
modal.style.display = "block";
modalImg.src = this.src;
captionText.innerHTML = this.alt;
}
// Get the <span> element that closes the modal
var span =
document.getElementsByClassName("close")[0];
// When the user clicks
on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}
Probieren Sie es selbst aus →
<!DOCTYPE html>
<html>
<head>
<style>
#myImg {
border-radius: 5px;
cursor: pointer;
transition: 0.3s;
}
#myImg:hover {opacity: 0.7;}
/* The Modal (background) */
.modal {
display: none; /* Hidden by default */
position: fixed; /* Stay in place */
z-index: 1; /* Sit on top */
padding-top: 100px; /* Location of the box */
left: 0;
top: 0;
width: 100%; /* Full width */
height: 100%; /* Full height */
overflow: auto; /* Enable scroll if needed */
background-color: rgb(0,0,0); /* Fallback color */
background-color: rgba(0,0,0,0.9); /* Black w/ opacity */
}
/* Modal Content (image) */
.modal-content {
margin: auto;
display: block;
width: 80%;
max-width: 700px;
}
/* Caption of Modal Image */
#caption {
margin: auto;
display: block;
width: 80%;
max-width: 700px;
text-align: center;
color: #ccc;
padding: 10px 0;
height: 150px;
}
/* Add Animation */
.modal-content, #caption {
animation-name: zoom;
animation-duration: 0.6s;
}
@keyframes zoom {
from {transform: scale(0.1)}
to {transform: scale(1)}
}
/* The Close Button */
.close {
position: absolute;
top: 15px;
right: 35px;
color: #f1f1f1;
font-size: 40px;
font-weight: bold;
transition: 0.3s;
}
.close:hover,
.close:focus {
color: #bbb;
text-decoration: none;
cursor: pointer;
}
/* 100% Image Width on Smaller Screens */
@media only screen and (max-width: 700px){
.modal-content {
width: 100%;
}
}
</style>
</head>
<body>
<h2>Image Modal</h2>
<p>Here, we use CSS to create a modal (dialog box) that is hidden by default.</p>
<p>We use JavaScript to trigger the modal and to display the current image inside the modal when it is clicked on. Also note that we use the value from the image's "alt" attribute as an image caption text inside the modal.</p>
<p>Don't worry if you do not understand the code right away. When you are done with CSS, go to our JavaScript Tutorial to learn more.</p>
<img id="myImg" src="img_lights.jpg" alt="Northern Lights, Norway" width="300" height="200">
<!-- The Modal -->
<div id="myModal" class="modal">
<span class="close">&times;</span>
<img class="modal-content" id="img01">
<div id="caption"></div>
</div>
<script>
// Get the modal
var modal = document.getElementById('myModal');
// Get the image and insert it inside the modal - use its "alt" text as a caption
var img = document.getElementById('myImg');
var modalImg = document.getElementById("img01");
var captionText = document.getElementById("caption");
img.onclick = function(){
modal.style.display = "block";
modalImg.src = this.src;
captionText.innerHTML = this.alt;
}
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}
</script>
</body>
</html>