```html摄影大赛颁奖PPTbody{font-family:Arial,sans-serif;line-height:1.6;margin:20px;}h1{text-align:center;...
```html
body {
fontfamily: Arial, sansserif;
lineheight: 1.6;
margin: 20px;
}
h1 {
textalign: center;
color: 333;
}
p {
marginbottom: 20px;
}
.slide {
marginbottom: 40px;
}
.imagecontainer {
textalign: center;
}
.imagecontainer img {
maxwidth: 100%;
height: auto;
}
.caption {
fontstyle: italic;
textalign: center;
}