1、首先在我们这电脑桌面上找到ps并点击它。
2、然后我们需要新建一个带有图片的图层。
3、接着我们需要点击魔棒工具。
4、然后点击图片中的空白区域。
5、接着我们需要点击投影，这一点很重要。
6、最后设定好我们的投影信息并点击确定就可以让png图片添加阴影了。
1、圆形
#circle{width:100pxheight:100pxbackground:red-moz-border-radius:50px-webkit-border-radius:50pxborder-radius:50px}
2、椭圆
#oval{width:200pxheight:100pxbackground:red-moz-border-radius:100px / 50px-webkit-border-radius:100px / 50pxborder-radius:100px / 50px}
3、等边三角
#triangle-up{width:0height:0border-left:50px solid transparentborder-right:50px solid transparentborder-bottom:100px solid red}
4、五角星
#star-five{margin:50px 0position:relativedisplay:blockcolor:redwidth:0pxheight:0pxborder-right:100px solid transparentborder-bottom:70px solid redborder-left:100px solid transparent-moz-transform:rotate(35deg)-webkit-transform:rotate(35deg)-ms-transform:rotate(35deg)-o-transform:rotate(35deg)}#star-five:before{border-bottom:80px solid redborder-left:30px solid transparentborder-right:30px solid transparentposition:absoluteheight:0width:0top:-45pxleft:-65pxdisplay:blockcontent:''-webkit-transform:rotate(-35deg)-moz-transform:rotate(-35deg)-ms-transform:rotate(-35deg)-o-transform:rotate(-35deg) }#star-five:after{position:absolutedisplay:blockcolor:redtop:3pxleft:-105pxwidth:0pxheight:0pxborder-right:100px solid transparentborder-bottom:70px solid redborder-left:100px solid transparent-webkit-transform:rotate(-70deg)-moz-transform:rotate(-70deg)-ms-transform:rotate(-70deg)-o-transform:rotate(-70deg)content:''}
5、爱心
#heart{position:relativewidth:100pxheight:90px}#heart:before,#heart:after{position:absolutecontent:""left:50pxtop:0width:50pxheight:80pxbackground:red-moz-border-radius:50px 50px 0 0border-radius:50px 50px 0 0-webkit-transform:rotate(-45deg)-moz-transform:rotate(-45deg)-ms-transform:rotate(-45deg)-o-transform:rotate(-45deg)transform:rotate(-45deg)-webkit-transform-origin:0 100%-moz-transform-origin:0 100%-ms-transform-origin:0 100%-o-transform-origin:0 100%transform-origin:0 100%}#heart:after{left:0-webkit-transform:rotate(45deg)-moz-transform:rotate(45deg)-ms-transform:rotate(45deg)-o-transform:rotate(45deg)transform:rotate(45deg)-webkit-transform-origin:100% 100%-moz-transform-origin:100% 100%-ms-transform-origin:100% 100%-o-transform-origin:100% 100%transform-origin:100% 100%}
6、倒三角
#triangle03{width:0height:0border:50pxsolid transparentborder-top:50pxsolid blue }
把这段加到你网页里面就可以了，不是CSS，是Javascript花瓣变叉叉是因为下面语句中的图片地址失效或者你的电脑没有连接上网络
STAR[0] = "http://blog.com.cn/skin/lixia/236605054.gif"
.....
<SCRIPT language=JavaScript1.2>
<!-- Begin
//<!-- Original: Altan ([email protected]) -->
//<!-- Web Site: http://www.altan.hr/snow -->
// Script arranged by Hisa (http://www.suisen.sakura.ne.jp/~ikitai/js/)
var no = 13// STAR number?@?P¡ë?¨C¨º?¨¦?o?¨¦¡ë?¡®??¨¬¨C??¡±
var speed = 10// smaller number moves the STAR faster
STAR = new Array()
STAR[0] = "http://blog.com.cn/skin/lixia/236605054.gif"
STAR[1] = "http://blog.com.cn/skin/lixia/236596767.gif"
STAR[2] = "http://blog.com.cn/skin/lixia/236597338.gif"
STAR[3] = "http://blog.com.cn/skin/lixia/236598420.gif"
STAR[4] = "http://blog.com.cn/skin/lixia/236599138.gif"
STAR[5] = "http://blog.com.cn/skin/lixia/236600240.gif"
var ns4up = (document.layers) ? 1 : 0 // browser sniffer
var ie4up = (document.all) ? 1 : 0
var dx, xp, yp // coordinate and position variables
var am, stx, sty // amplitude and step variables
var i, doc_width = 1500, doc_height = 1800
if (ns4up) {
doc_width = self.innerWidth
doc_height = self.innerHeight
} else if (ie4up) {
doc_width = document.body.clientWidth
doc_height = document.body.clientHeight
}
dx = new Array()
xp = new Array()
yp = new Array()
am = new Array()
stx = new Array()
sty = new Array()
j = 0
for (i = 0i <no++ i) {
dx[i] = 0 // set coordinate variables
xp[i] = Math.random()*(doc_width-50) // set position variables
yp[i] = Math.random()*doc_height
am[i] = Math.random()*20// set amplitude variables
stx[i] = 0.02 + Math.random()/10// set step variables
sty[i] = 0.7 + Math.random()// set step variables
if (ns4up) { // set layers
if (i == 0) {
document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src=\"" + STAR[j] + "\" border=\"0\"></layer>")
} else {
document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src=\"" + STAR[j] + "\" border=\"0\"></layer>")
}
} else if (ie4up) {
if (i == 0) {
document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absoluteZ-INDEX: "+ i +" VISIBILITY: visibleTOP: 15pxLEFT: 15pxwidth:1\"><img src=\"" + STAR[j] + "\" border=\"0\"></div>")
} else {
document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absoluteZ-INDEX: "+ i +" VISIBILITY: visibleTOP: 15pxLEFT: 15pxwidth:1\"><img src=\"" + STAR[j] + "\" border=\"0\"></div>")
}
}
if (j == (STAR.length-1)) { j = 0} else { j += 1}
}
function STAR_NS() { // Netscape main animation function
for (i = 0i <no++ i) { // iterate for every dot
yp[i] += sty[i]
if (yp[i] >doc_height-50) {
xp[i] = Math.random()*(doc_width-am[i]-30)
yp[i] = 0
stx[i] = 0.02 + Math.random()/10
sty[i] = 0.7 + Math.random()
doc_width = self.innerWidth
doc_height = self.innerHeight
}
dx[i] += stx[i]
document.layers["dot"+i].top = yp[i]
document.layers["dot"+i].left = xp[i] + am[i]*Math.sin(dx[i])
}
setTimeout("STAR_NS()", speed)
}
function STAR_IE() { // IE main animation function
for (i = 0i <no++ i) { // iterate for every dot
yp[i] += sty[i]
if (yp[i] >doc_height-50) {
xp[i] = Math.random()*(doc_width-am[i]-30)
yp[i] = 0
stx[i] = 0.02 + Math.random()/10
sty[i] = 0.7 + Math.random()
doc_width = document.body.clientWidth
doc_height = document.body.clientHeight
}
dx[i] += stx[i]
document.all["dot"+i].style.pixelTop = yp[i]
document.all["dot"+i].style.pixelLeft = xp[i] + am[i]*Math.sin(dx[i])
}
setTimeout("STAR_IE()", speed)
}
if (ns4up) {
STAR_NS()
} else if (ie4up) {
STAR_IE()
}
// End -->
</SCRIPT>
