デモ
CSS
.demo-container {
height:300px;
overflow:hidden;
display:block;
position:relative;
/* CSS3 Gradient */
background: rgb(125,126,125);
background: url(data:image/svg+xml;base64,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);
background: -moz-radial-gradient(center, ellipse cover, rgba(125,126,125,1) 0%, rgba(14,14,14,1) 100%);
background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,rgba(125,126,125,1)), color-stop(100%,rgba(14,14,14,1)));
background: -webkit-radial-gradient(center, ellipse cover, rgba(125,126,125,1) 0%,rgba(14,14,14,1) 100%);
background: -o-radial-gradient(center, ellipse cover, rgba(125,126,125,1) 0%,rgba(14,14,14,1) 100%);
background: -ms-radial-gradient(center, ellipse cover, rgba(125,126,125,1) 0%,rgba(14,14,14,1) 100%);
background: radial-gradient(ellipse at center, rgba(125,126,125,1) 0%,rgba(14,14,14,1) 100%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#7d7e7d', endColorstr='#0e0e0e',GradientType=1 );
}
.bubble1, .bubble2, .bubble3, .bubble4 {
position:absolute;
display:block;
/* CSS3 Box Shadow */
box-shadow:0 20px 30px rgba(0, 0, 0, 0.2), inset 0px 10px 30px 5px rgba(255, 255, 255, 1);
-webkit-box-shadow:0 20px 30px rgba(0, 0, 0, 0.2), inset 0px 10px 30px 5px rgba(255, 255, 255, 1);
-moz-box-shadow:0 20px 30px rgba(0, 0, 0, 0.2), inset 0px 10px 30px 5px rgba(255, 255, 255, 1);
/* CSS3 Border Radius */
border-radius:50%;
-webkit-border-radius:50%;
-moz-border-radius:50%;
/* CSS3 Transition */
-webkit-transition: all .5s ease-in-out;
-moz-transition: all .5s ease-in-out;
-o-transition: all .5s ease-in-out;
transition: all .5s ease-in-out;
}
.bubble1 {
width:100px;
height:100px;
top:20%;
left:50%;
}
.bubble2 {
width:200px;
height:200px;
left:20%;
top:10%;
}
.bubble3 {
width:150px;
height:150px;
left:50%;
top:40%;
}
.bubble4 {
width:90px;
height:90px;
left:70%;
top:15%;
}
/* .bubble1:hover {
margin-top:30px;
width:90px;
}
.bubble2:hover {
margin-left:20px;
height:190px;
}
.bubble3:hover {
margin-top:60px;
width:160px;
}
.bubble4:hover {
margin-left:50px;
height:100px;
} */
/* remove below codes if you don't wish to have the texts "3D Bubbles" */
.demo-text{
position:absolute;
bottom:20px;
right:15px;
font-size:36px;
color:#666;
text-shadow:0 2px 0 #000;
}
html
<div class="demo-container">
<span class="bubble1"></span>
<span class="bubble2"></span>
<span class="bubble3"></span>
<span class="bubble4"></span>
<div class="demo-text">3D Bubbles</div> <!-- remove this div if you don't wish to have the texts "3D Bubbles" -->
</div>
参照