4.14
CSS background属性简写:
background-position属性组合方式:[ left | center | right ] || [ top | bottom ] (组合后中间没有下划线)
background-attachment 属性设置背景图像是否固定或者随着页面的其余部分滚动
background属性简写顺序:background-color || background-image || background-repeat || background-attachment || background-position
4.15
圆角框:css3的border-radius和border-image
border-radius:上,右,下,左 (四个属性值)
border-image:url(),剪裁位置,重复性
eg:border-image:url(),25% 25% 25% 25% / 25px round round;
↑ ↑ ↑
边框宽 水平方向 垂直方向
山顶角(利用border的特性):
参考:http://www.jsann.com/post/CSS_to_achieve_the_principle_of_the_Peak_Point.html
阴影:box-shadow
box-shadow: 3px 3px 6px #666;
↑ ↑ ↑ ↑
水平阴影位置 垂直阴影位置 阴影宽度 颜色
不透明度:
rgba 同时设置颜色和不透明度。
background-color: rbga(0,0,0,0.8)
最后是透明度,80%
视差滚动:
把背景图像相对于窗口大小进行水平偏移20%,当水平调整窗口大小时,背景图像的位置会改变,产生移动效果。
background-position: 20% 0;
把中景:设置为40%
前景:设置为150%
数值越大,想对移动得就越快,产生更有深度的感觉。
链接应用样式:
a的伪类顺序:Lord Vader Hates Furry Animals
a:link, a:visited, a:hover, a:focus, a:active
[如果不按照这个顺序定义的话,两者优先级是相同的,link和visited的样式会覆盖其他三个]
a的link下划线:
1.边框border
2.图片
代码参考:
Comments
==========================
color:前景色(字体颜色)
background-color:背景色

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