CSS
语言：
CSSSCSS
确定
body {
background: #666;
color: #f0f0f0;
text-align: center;
text-shadow: 2px 2px #000;
}
.item {
background: #FC0;
display: inline-block;
height: 50px;
margin: 30px;
width: 50px;
}
.row {
margin: 10px;
}
.rounded {
border: 10px solid #666;
border-radius: 10px;
position: relative;
}
.rounded:before {
border: 10px solid;
border-radius: 20px;
bottom: -20px;
content: "";
display: block;
left: -20px;
position: absolute;
right: -20px;
top: -20px;
}
.rounded:after {
border: 10px solid;
border-radius: 0px;
bottom: 0;
content