html,body{
	padding: 0;
	margin: 0;
}
.container{
	width: 100%;
	height: 100vh;
	overflow: hidden;
	background: #000 url('../img/green_code_bg.gif') repeat center;
}
.circle{
	position: fixed;
	width: 200px;
	height: 200px;
	left: 50%;
	top: 50%;
	border-radius: 50%;
	border:2px solid rgba(233, 255, 233, 0.6);
	transform: translate(-50%, -50%);
	cursor: pointer;
	z-index: 10;
	box-sizing: border-box;
	background: rgba(0, 100, 0, 0.6);
	font-size: 30px;
	color: #0f0;
	line-height: 200px;
	text-align: center;
	opacity: 0.3;

}
.circle:hover{
	transition: all 0.5s;
	box-shadow: 0 0 30px 1px rgba(255, 255, 255, 0.3);
}
.kuo{
	position: fixed;
	width: 198px;
	height: 198px;
	left: 50%;
	top: 50%;
	border-radius: 50%;
	transform: translate(-50%, -50%) scale(0);
	cursor: pointer;
	animation: animation1 5s ease-in-out;
  	z-index: 1;
  	background: rgba(0, 100, 0, 0.4);
}
@keyframes animation1 {
  from {
  	transform: translate(-50%, -50%) scale(0);
  	opacity:0.6;
  }
  to {
  	transform: translate(-50%, -50%) scale(5.0);
  	opacity:0;
  }
}