css3学习笔记之图片

圆角图片

border-radius:

圆角图片:

<!DOCTYPE html>

<html>

<head>

<style>

img {

border-radius: 8px;

}

</style>

</head>

<body>

<h2>圆角图片</h2>

<p>使用 border-radius 属性来创建圆角图片:</p>

<img src="paris.jpg" alt="Paris" width="400" height="300">

</body>

</html>

椭圆形图片:

<!DOCTYPE html>

<html>

<head>

<style>

img {

border-radius: 50%;

}

</style>

</head>

<body>

<h2>椭圆形图片</h2>

<p>使用 border-radius 属性来创建椭圆形图片：</p>

<img src="paris.jpg" alt="Paris" width="400" height="300">

</body>

</html>

缩略图

<!DOCTYPE html>

<html>

<head>

<style>

img {

border: 1px solid red;

border-radius: 4px;

padding: 5px;

}

</style>

</head>

<body>

<h2>缩略图</h2>

<p>我们使用 border 属性来创建缩略图。</p>

<img src="paris.jpg" alt="Paris" width="400" height="300">

</body>

</html>

响应式图片

响应式图片会自动适配各种尺寸的屏幕。

<!DOCTYPE html>

<html>

<head>

<style>

img {

max-width: 100%;

height: auto;

}

</style>

</head>

<body>

<h2>响应式图片</h2>

<p>响应式图片会自动适配各种尺寸的屏幕。</p>

<p>通过重置浏览器大小查看效果:</p>

<img src="http://www.runoob.com/wp-content/uploads/2016/04/trolltunga.jpg" alt="Norway" width="1000" height="300">

</body>

</html>

图片文本

<!DOCTYPE html>

<html>

<head>

<style>

.container {

position: relative;

}

.topleft {

position: absolute;

top: 8px;

left: 16px;

font-size: 18px;

}

.topright {

position: absolute;

top: 8px;

right: 16px;

font-size: 18px;

}

.bottomleft {

position: absolute;

bottom: 8px;

left: 16px;

font-size: 18px;

}

.bottomright {

position: absolute;

bottom: 8px;

right: 16px;

font-size: 18px;

}

.center {

position: absolute;

left: 0;

top: 50%;

width: 100%;

text-align: center;

font-size: 18px;

}

img {

width: 100%;

height: auto;

opacity: 0.3;

}

</style>

</head>

<body>

<h2>图片文本</h2>

<p>在图片左上角添加文本信息:</p>

<div class="container">

<img src="http://www.runoob.com/wp-content/uploads/2016/04/trolltunga.jpg" alt="Norway" width="1000" height="300">

<div class="topleft">左上角</div>

<div class="topright">右上角</div>

<div class="bottomleft">左下角</div>

<div class="bottomright">右下角</div>

<div class="center">居中</div>

</div>

</body>

</html>

卡片式图片

<!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>

<div class="polaroid">

<img src="lights600x400.jpg" alt="Norway" style="width:100%">

<div class="container">

<p>Northern Lights in Norway</p>

</div>

</body>

</html>

图片滤镜

<!DOCTYPE html>

<html>

<head>

<style>

img {

width: 33%;

height: auto;

float: left;

max-width: 235px;

}

.blur {-webkit-filter: blur(4px);filter: blur(4px);}

.brightness {-webkit-filter: brightness(250%);filter: brightness(250%);}

.contrast {-webkit-filter: contrast(180%);filter: contrast(180%);}

.grayscale {-webkit-filter: grayscale(100%);filter: grayscale(100%);}

.huerotate {-webkit-filter: hue-rotate(180deg);filter: hue-rotate(180deg);}

.invert {-webkit-filter: invert(100%);filter: invert(100%);}

.opacity {-webkit-filter: opacity(50%);filter: opacity(50%);}

.saturate {-webkit-filter: saturate(7); filter: saturate(7);}

.sepia {-webkit-filter: sepia(100%);filter: sepia(100%);}

.shadow {-webkit-filter: drop-shadow(8px 8px 10px green);filter: drop-shadow(8px 8px 10px green);}

</style>

</head>

<body>

<p><strong>注意:</strong> Internet Explorer <span lang="no-bok">或 Safari 5.1 (及更早版本)</span> 不支持该属性。</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>

响应式图片相册

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<!DOCTYPE html>

<html>

<head>

<style>

div.img {

border: 1px solid #ccc;

}

div.img:hover {

border: 1px solid #777;

}

div.img 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 style="text-align:center">响应式图片相册</h2>

<div class="responsive">

<div class="img">

<a target="_blank" href="img_fjords.jpg">

<img src="http://www.runoob.com/wp-content/uploads/2016/04/img_fjords.jpg" alt="Trolltunga Norway" width="300" height="200">

</a>

<div class="desc">Add a description of the image here</div>

</div>

<div class="responsive">

<div class="img">

<a target="_blank" href="img_forest.jpg">

<img src="http://www.runoob.com/wp-content/uploads/2016/04/img_forest.jpg" alt="Forest" width="600" height="400">

</a>

<div class="desc">Add a description of the image here</div>

</div>

<div class="responsive">

<div class="img">

<a target="_blank" href="img_lights.jpg">

<img src="http://www.runoob.com/wp-content/uploads/2016/04/img_lights.jpg" alt="Northern Lights" width="600" height="400">

</a>

<div class="desc">Add a description of the image here</div>

</div>

<div class="responsive">

<div class="img">

<a target="_blank" href="img_mountains.jpg">

<img src="http://www.runoob.com/wp-content/uploads/2016/04/img_mountains.jpg" alt="Mountains" width="600" height="400">

</a>

<div class="desc">Add a description of the image here</div>

</div>

<div class="clearfix"></div>

<div style="padding:6px;">

<h4>重置浏览器大小查看效果</h4>

</div>

</body>

</html>

图片 Modal(模态)

本实例演示了如何结合 CSS 和 JavaScript 来一起渲染图片。

首先，我们使用 CSS 来创建 modal 窗口 (对话框), 默认是隐藏的。

然后，我们使用 JavaScript 来显示模态窗口，当我们点击图片时，图片会在弹出的窗口中显示：

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<!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 {

-webkit-animation-name: zoom;

-webkit-animation-duration: 0.6s;

animation-name: zoom;

animation-duration: 0.6s;

}

@-webkit-keyframes zoom {

from {-webkit-transform: scale(0)}

to {-webkit-transform: scale(1)}

}

@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>图片模态框</h2>

<p>本实例演示了如何结合 CSS 和 JavaScript 来一起渲染图片。</p><p>

首先，我们使用 CSS 来创建 modal 窗口 (对话框), 默认是隐藏的。<p>

<p

>然后，我们使用 JavaScript 来显示模态窗口，当我们点击图片时，图片会在弹出的窗口中显示：</

p>

<img id="myImg" src="http://www.runoob.com/wp-content/uploads/2016/04/img_lights.jpg" alt="Northern Lights, Norway" width="300" height="200">

<div id="myModal" class="modal">

<span class="close">×</span>

<img class="modal-content" id="img01">

<div id="caption"></div>

</div>

<script>

// 获取模态窗口

var modal = document.getElementById('myModal');

// 获取图片模态框，alt 属性作为图片弹出中文本描述

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;

modalImg.alt = this.alt;

captionText.innerHTML = this.alt;

}

// 获取 <span> 元素，设置关闭模态框按钮

var span = document.getElementsByClassName("close")[0];

// 点击 <span> 元素上的 (x), 关闭模态框

span.onclick = function() {

modal.style.display = "none";

}

</script>

</body>

</html>