1.选择器
id class 标签 子代 后代 交集 并集 通配符选择器 伪类选择器 结构选择器 属性选择器 相邻+选择器 兄弟选择器~
2.浏览器内核
谷歌的内核是webkit
火狐的内核是gecko
IE的内核是trident
欧朋的内核是presto
国内浏览器的内核 webkit
3.css3针对同一样式在不同浏览器的兼容 需要在样式属性前加上内核前缀。
谷歌 -webkit-transition：
欧朋 OPera -o-transition
飞狐 firefox -moz-transition
IE -ms-transition
4.c3中的过滤属性transition
transition 简写属性，用于在一个属性中设置四个过度属性
transition-propert 规定应用过度的css属性的名称。
transition-duration 定义过渡效果花费的时间。 默认是0.
transition-timing--function 规定过渡效果的时间曲线。默认是“”ease“”
transition-delay 规定过渡效果何时开始。默认是0.
div[name-zhang]{
width:100px;
height:30px;
background:red;
transition:width 2s linear 1s;
}
注意：时间一定要带单位
eg:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
#a {
width: 100px;
height: 50px;
background: orange;
/*分开写*/
transition-property: width;
transition-duration: 2s;
transition-timing-function: linear;
transition-delay: 1s;
/*简写*/
transition: width 2s linear; 1s
}
#a:hover {
width: 500px;
}
</style>
</head>
<body>
<div id="a"></div>
</body>
<
ml>
5.css3的动画（animation）：
eg:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
div {
width: 100px;
height: 100px;
background: orange;
position: absolute;
left: 0;
top: 0;
animation: reverse;/*反向*/
animation: donghua 4000ms linear infinite;
animation-direction: alternate;
}
div:hover {
animation-play-state: paused;
}
@-webkit-keyframes donghua{
25%{
top: 0px;
left: 300px;
}
50%{
top: 300px;
left: 300px;
}
75%{
top: 300px;
left: 0px;
}
100%{
top: 0px;
left: 0px;
}
}
</style>
</head>
<body>
<div></div>
</body>
<ml>
6.2D效果：
css3中的2D特效是方法（函数），提供了四个方法
translate()：平移，有两个参数
rotate()：旋转，参数2是数字，1代表不变
scale()：缩放，只充当属性值
eg:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
div {
width: 100px;
height: 100px;
background: orange;
position: absolute;
top: 300px;
left: 50%;
transform: rotateZ(0deg);
transform-origin: left top;
transform: translate(10px,10px);
transform: scale(2);
animation: name 2s linear infinite;
}
@-webkit-keyframes name{
from{
transform: rotateZ(0deg);
}
to{
transform: rotateZ(360deg);
}
</style>
</head>
<body>
<div></div>
</body>
<ml>
6.3D效果：
原理：近大远小，perspection
如果元素要有3D的效果，perspection给他的父级元素
transform-style：preserve-3d的内部子元素成3D效果
eg:盒子效果
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
body {
-webkit-perspective: 3000px;
}
.box {
width: 400px;
height: 400px;
/*border: 1px solid green;*/
position: absolute;
left: 50%;
top: 50%;
margin: -200px 0 0 -200px;
transform-style: preserve-3d;
margin-top: 200px;
animation: name 4s linear infinite;
}
@-webkit-keyframes name{
from{transform: rotateX(0) rotateX(0);}
to{transform: rotate(360deg) rotateX(360deg);}
}
.box>div {
width: 400px;
height: 400px;
position: absolute;
top: 0;
left: 0;
text-align: center;
line-height: 400px;
font-size: 30px;
color: wheat;
transition: all 2s linear;
}
.box>div:nth-of-type(1) {
background: blue;
transform: translateZ(-200px);
}
.box>div:nth-of-type(2) {
background: blueviolet;
transform: rotateX(90deg) translateZ(200px);
}
.box>div:nth-of-type(3) {
background: goldenrod;
transform: rotateX(90deg) translateZ(-200px);
}
.box>div:nth-of-type(4) {
background: green;
transform: rotateY(90deg) translateZ(200px);
}
.box>div:nth-of-type(5) {
background: gray;
transform: rotateY(90deg) translateZ(-200px);
}
.box>div:nth-of-type(6) {
background: skyblue;
transform: translateZ(200px);
}
.box:hover div:nth-of-type(1) {
transform: translateZ(-400px);
}
.box:hover div:nth-of-type(2) {
transform: rotateX(90deg) translateZ(400px);
}
.box:hover div:nth-of-type(3) {
transform: rotateX(90deg) translateZ(-400px);
}
.box:hover div:nth-of-type(4) {
transform: rotateY(90deg) translateZ(400px);
}
.box:hover div:nth-of-type(5) {
transform: rotateY(90deg) translateZ(-400px);
}
.box:hover div:nth-of-type(6) {
transform: translateZ(400px);
}
</style>
</head>
<body>
<div class="box">
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
<div>6</div>
</div>
</body>
<ml>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
#a {
width: 100px;
height: 50px;
background: orange;
/*分开写*/
transition-property: width;
transition-duration: 2s;
transition-timing-function: linear;
transition-delay: 1s;
/*简写*/
transition: width 2s linear; 1s
}
#a:hover {
width: 500px;
}
</style>
</head>
<body>
<div id="a"></div>
</body>
<
ml>
5.css3的动画（animation）：
eg:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
div {
width: 100px;
height: 100px;
background: orange;
position: absolute;
left: 0;
top: 0;
animation: reverse;/*反向*/
animation: donghua 4000ms linear infinite;
animation-direction: alternate;
}
div:hover {
animation-play-state: paused;
}
@-webkit-keyframes donghua{
25%{
top: 0px;
left: 300px;
}
50%{
top: 300px;
left: 300px;
}
75%{
top: 300px;
left: 0px;
}
100%{
top: 0px;
left: 0px;
}
}
</style>
</head>
<body>
<div></div>
</body>
<
ml>
6.2D效果：
css3中的2D特效是方法（函数），提供了四个方法
translate()：平移，有两个参数
rotate()：旋转，参数2是数字，1代表不变
scale()：缩放，只充当属性值
eg:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
div {
width: 100px;
height: 100px;
background: orange;
position: absolute;
top: 300px;
left: 50%;
transform: rotateZ(0deg);
transform-origin: left top;
transform: translate(10px,10px);
transform: scale(2);
animation: name 2s linear infinite;
}
@-webkit-keyframes name{
from{
transform: rotateZ(0deg);
}
to{
transform: rotateZ(360deg);
}
</style>
</head>
<body>
<div></div>
</body>
<
ml>
6.3D效果：
原理：近大远小，perspection
如果元素要有3D的效果，perspection给他的父级元素
transform-style：preserve-3d的内部子元素成3D效果
eg:盒子效果
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
body {
-webkit-perspective: 3000px;
}
.box {
width: 400px;
height: 400px;
/*border: 1px solid green;*/
position: absolute;
left: 50%;
top: 50%;
margin: -200px 0 0 -200px;
transform-style: preserve-3d;
margin-top: 200px;
animation: name 4s linear infinite;
}
@-webkit-keyframes name{
from{transform: rotateX(0) rotateX(0);}
to{transform: rotate(360deg) rotateX(360deg);}
}
.box>div {
width: 400px;
height: 400px;
position: absolute;
top: 0;
left: 0;
text-align: center;
line-height: 400px;
font-size: 30px;
color: wheat;
transition: all 2s linear;
}
.box>div:nth-of-type(1) {
background: blue;
transform: translateZ(-200px);
}
.box>div:nth-of-type(2) {
background: blueviolet;
transform: rotateX(90deg) translateZ(200px);
}
.box>div:nth-of-type(3) {
background: goldenrod;
transform: rotateX(90deg) translateZ(-200px);
}
.box>div:nth-of-type(4) {
background: green;
transform: rotateY(90deg) translateZ(200px);
}
.box>div:nth-of-type(5) {
background: gray;
transform: rotateY(90deg) translateZ(-200px);
}
.box>div:nth-of-type(6) {
background: skyblue;
transform: translateZ(200px);
}
.box:hover div:nth-of-type(1) {
transform: translateZ(-400px);
}
.box:hover div:nth-of-type(2) {
transform: rotateX(90deg) translateZ(400px);
}
.box:hover div:nth-of-type(3) {
transform: rotateX(90deg) translateZ(-400px);
}
.box:hover div:nth-of-type(4) {
transform: rotateY(90deg) translateZ(400px);
}
.box:hover div:nth-of-type(5) {
transform: rotateY(90deg) translateZ(-400px);
}
.box:hover div:nth-of-type(6) {
transform: translateZ(400px);
}
</style>
</head>
<body>
<div class="box">
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
<div>6</div>
</div>
</body>
<ml>