CSS文字渐变
background: linear-gradient(-3deg,#c3c3c3 0%,#ffffff 100%);
-webkit-background-clip: text;
color: transparent;
云朵
div{
width:100px;
height:100px;
margin:50px auto;
background:#999;
border-radius:50%;
box-shadow:
120px 0px 0 -10px #999,
95px 20px 0 0px #999,
30px 30px 0 -10px #999,
90px -20px 0 0px #999,
40px -40px 0 0px #999;
}