css3学习笔记之图片

圆角图片

border-radius:
圆角图片:
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<!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:
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<!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

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<!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。

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<!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

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<!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

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<!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 >
</ div >
 
</ body >
</ html >

图片滤镜

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<!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 >
 
 
< 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 >
 
< 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 >
 
< 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 >
 
< 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" >
 
<!-- The Modal -->
< 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 >
 
 
 

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