CSS3简单的小技巧：linear-gradient切角画册

关于linear-gradient的语法就不多做介绍了网上到处都是，下面看个小例

我们先做一个渐变，使其让他旋转，

<div class="example"> </div>

.example{
height:150px;
width:500px;
margin: 100px auto;
background-color:#4299BC;
background:
-webkit-linear-gradient(45deg, #0E2D57 30px, #A7EAFB 30px),
-webkit-linear-gradient(135deg, #0E2D57 30px, #A7EAFB 30px),
-webkit-linear-gradient(225deg, #0E2D57 30px, #A7EAFB 30px),
-webkit-linear-gradient(315deg, #0E2D57 30px, #A7EAFB 30px);
background-position: bottom left, bottom right, top right, top left;
background-size: 55% 55%;
background-repeat: no-repeat;
}

如果把深色改为透明，那么我们想要的东西就出来了

查看效果

代码下

<div class="tucked-corners-top">
<div class="tucked-corners-bottom"><img src="······"></div>
</div>

.tucked-corners-top {
position: relative;
width: 500px;
min-height: 200px;
margin: 100px auto;
padding: 20px;
background-color: #fff;
background:
-webkit-linear-gradient(45deg, transparent 10px, #fff 10px),
-webkit-linear-gradient(135deg, transparent 10px, #fff 10px),
-webkit-linear-gradient(225deg, transparent 10px, #fff 10px),
-webkit-linear-gradient(315deg, transparent 10px, #fff 10px);
background:
-moz-linear-gradient(45deg, transparent 10px, #fff 10px),
-moz-linear-gradient(135deg, transparent 10px, #fff 10px),
-moz-linear-gradient(225deg, transparent 10px, #fff 10px),
-moz-linear-gradient(315deg, transparent 10px, #fff 10px);
background:
-o-linear-gradient(45deg, transparent 10px, #fff 10px),
-o-linear-gradient(135deg, transparent 10px, #fff 10px),
-o-linear-gradient(225deg, transparent 10px, #fff 10px),
-o-linear-gradient(315deg, transparent 10px, #fff 10px);
background-position: bottom left, bottom right, top right, top left;
background-size: 55% 55%;
background-repeat: no-repeat;
-moz-box-shadow: 0 20px 10px -20px rgba(0, 0, 0, .5);
-webkit-box-shadow: 0 20px 10px -20px rgba(0, 0, 0, .5);
box-shadow: 0 20px 10px -20px rgba(0, 0, 0, .5);
}
[class*='tucked-corners-']::before,
[class*='tucked-corners-']::after {
content: '';
position: absolute;
height: 20px; width: 80px;
-webkit-box-shadow: 0 8px 15px -7px rgba(0, 0, 0, .5);
-moz-box-shadow: 0 8px 15px -7px rgba(0, 0, 0, .5);
box-shadow: 0 8px 15px -7px rgba(0, 0, 0, .5);
box-shadow: none\9; /* IE9 */
}
.tucked-corners-top::before,
.tucked-corners-top::after {
top: -10px;
}
.tucked-corners-bottom::before,
.tucked-corners-bottom::after {
bottom: -10px;
}
.tucked-corners-top::before,
.tucked-corners-bottom::before {
left: -42px;
}
.tucked-corners-top::after,
.tucked-corners-bottom::after {
right: -42px;
}
.tucked-corners-top::before {
-webkit-transform: rotate(-45deg);
-moz-transform: rotate(-45deg);
-ms-transform: rotate(-45deg);
-o-transform: rotate(-45deg);
transform: rotate(-45deg);
}
.tucked-corners-top::after {
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-ms-transform: rotate(45deg);
-o-transform: rotate(45deg);
transform: rotate(45deg);
}
.tucked-corners-bottom::before {
-webkit-transform: rotate(-135deg);
-moz-transform: rotate(-135deg);
-ms-transform: rotate(-135deg);
-o-transform: rotate(-135deg);
transform: rotate(-135deg);
}
.tucked-corners-bottom::after {
-webkit-transform: rotate(135deg);
-moz-transform: rotate(135deg);
-ms-transform: rotate(135deg);
-o-transform: rotate(135deg);
transform: rotate(135deg);
}

查看效果

ps：IE好像还没有完全支持，所以我就没有写IE兼容