Let me summarize some background attributes of CSS and the new background attributes of CSS3.
background:
background-color:Background color
background-image:Background image
background-repeat:Background repeat
background-position:Background positioning
background-attachment:Background fixed/fixed )
background-size background-size
background-size:x y
background-size:100% 100%
background-size:cover proportional enlargement
background-size:contain contains (image does not overflow)
Multiple backgrounds
background:url() 0 0,url() 0 100%;
background-origin Background area positioning
Border-box: Display the background starting from the border area.
padding-box: Display the background starting from the padding area.
content-box: Display the background starting from the content area.
background-clip Background drawing area
border-box: Crop the background outward from the border area.
padding-box: Crop the background outward from the padding area.
Content-box: Crop the background outward from the content area.
text: background fill text //Not supported
no-clip: Crop the background outward from the border area.
Color gradient
Linear gradient: -webkit-linear-gradient(starting point/angle, color position,...,)
Starting point: left/top/right/ bottom/left top...Default top
Angle: counterclockwise 0-360 degrees
Color position: red 0, blue 50%, yellow 100% (red starts from 50 % Gradient to 100% blue)
Color gradient
repeating-linear-gradient Linear gradient repeating tile
IE low version gradient (filter):
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff',endColorstr='#ff0000',GradientType='1');
Color Gradient
Path Gradient: radial-gradient (starting point (center position of circle), shape/radius/size, color 1, color 2)
Starting point: left/top/right/bottom or specific value/percentage
Shape: ellipse, circle
Size: specific value or percentage, or keyword (closest-side (closest-side), closest-corner (closest corner), farthest- side (farthest end), farthest-corner (farthest corner), contain (include), cover (cover));
Note: Firefox currently only supports the keyword
about background There are so many CSS properties. For more exciting content, please pay attention to other related articles on the php Chinese website!
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What to do if DIVs overlap in HTML
##How to use margin 0 auto in HTML
What is the difference between br, p and DIV in html
The above is the detailed content of What are the new background properties in CSS3?. For more information, please follow other related articles on the PHP Chinese website!

两种方法:1、利用display属性,只需给元素添加“display:none;”样式即可。2、利用position和top属性设置元素绝对定位来隐藏元素,只需给元素添加“position:absolute;top:-9999px;”样式。

怎么制作文字轮播与图片轮播?大家第一想到的是不是利用js,其实利用纯CSS也能实现文字轮播与图片轮播,下面来看看实现方法,希望对大家有所帮助!

自适应布局又称“响应式布局”,是指可以自动识别屏幕宽度、并做出相应调整的网页布局;这样的网页能够兼容多个不同的终端,而不是为每个终端做一个特定的版本。自适应布局是为解决移动端浏览网页而诞生的,能够为使用不同终端的用户提供很好的用户体验。

实现方法:1、使用“:active”选择器选中鼠标点击图片的状态;2、使用transform属性和scale()函数实现图片放大效果,语法“img:active {transform: scale(x轴放大倍数,y轴放大倍数);}”。

css3中的动画效果有变形;可以利用“animation:动画属性 @keyframes ..{..{transform:变形属性}}”实现变形动画效果,animation属性用于设置动画样式,transform属性用于设置变形样式。

在css3中,可以利用“animation-timing-function”属性设置动画旋转速度,该属性用于指定动画将如何完成一个周期,设置动画的速度曲线,语法为“元素{animation-timing-function:速度属性值;}”。

本篇文章带大家一起深入了解一下CSS3中的新特性::target-text 选择器,聊聊该选择器的作用和使用方法,希望对大家有所帮助!

css3线性渐变可以实现三角形;只需创建一个45度的线性渐变,设置渐变色为两种固定颜色,一个是三角形的颜色,另一个为透明色即可,语法“linear-gradient(45deg,颜色值,颜色值 50%,透明色 50%,透明色 100%)”。


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