*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

img{
    max-width: 100%;
    vertical-align: middle;
}

.slide{
	float: left;
	width: 80%;
	margin:0 10%;
	margin-top: 50px;
	position: relative;
}
.slide_nav{
	position: absolute;
	left: 0;
	top:50%;
	width: 100%;
	margin-top: -70px;
}
.slide_nav_item{
	position: absolute;
	padding: 15px 20px;
	background: #fff;
	z-index: 99;
	border-radius: 50%;
}
.slide_item{
	display: none;
}

.slide_item.first{
	display: block;
}
.slide_nav_item:hover{
	background: #3971c9;
	cursor: pointer;
	color:#fff;
}
.slide_nav_item.b{
	left: 10px;
}
.slide_nav_item.g{
	right: 10px
}
.slide_item_desc{
	position: absolute;
	padding: 25px;
	background: rgba(0,0,0,0.7);
	left: 0;
	bottom: 0;
	color:#fff;
}
.slide_item_desc h1{
	font-size: 1.5em;
	margin-bottom: 10px;
	text-transform: uppercase;
}

.slide_pager{
	position: absolute;
	top:20px;
	left: 0;
	width: 100%;
	text-align: center;
}
.slide_pager span{
	background: #fff;
	padding: 5px 10px;
	color: #333;
	cursor: pointer;
}

.slide_pager span:hover{
	background: #3971c9;
	color: #fff;
}
.slide_pager .active{
	background: #204c70;
	color: #fff;
}