body{
	width:100%; height: 100%; min-width: 1000px; position: fixed;overflow: hidden;
}
 
.bg{
	position: absolute;
    width:100%;
	height: 100%;
	top:0;
	left:0;
	overflow: hidden;
}
.bg img{
	position: absolute;
	max-width:100%;
	max-height: 100%;
	left:0; right:0; top:0; bottom:0;
	margin:auto;
	display: block;
}
.head{
	position: absolute;
	width:100%;
	height: 100%;
	top:0;
	left:0;
	z-index: 100;
	overflow: hidden;
}
.head .headimg{
	position: absolute;
	max-width:100%;
	max-height: 100%;
	left:0; right:0; top:0; bottom:0;
	margin:auto;
	display: block;
}
.hide{
	display:none !important;
}
/*手机端*/
@media screen and ( min-width: 212px){/*213px显示屏样式 LG Optimus One*/}
@media screen and ( min-width: 319px){/*320px显示屏样式 苹果4/4S/5C/5S黑莓Z30 */}
@media screen and ( min-width: 359px){/*360px显示屏样式 索尼Z1*/}
@media screen and ( min-width: 383px){/*384px显示屏样式 黑莓Z10 谷歌 Nexus 6 LG Optimus G*/}
@media screen and ( min-width: 399px){/*399px显示屏样式 三星galaxyNote*/}
@media screen and ( min-width: 414px){/*414px显示屏样式 苹果6plus*/}
@media screen and ( min-width: 423px){/*424px显示屏样式 LG 4X */}
@media screen and ( min-width: 479px){/*480px显示屏样式 索尼MT27i Xperia sola*/}
@media screen and ( min-width: 539px){/*640px显示屏样式 摩托罗拉Droid3/4/Razr Atrix 4g*/}
@media screen and ( min-width: 639px){/*640px显示屏样式*/}
@media screen and ( min-width: 640px){/*640px以上显示屏样式*/}
 

@media (min-width: 1024px){
 html{font-size: 18px}
} /*>=1024的设备*/

@media (min-width: 1100px) {
 html{font-size: 20px}
} /*>=1100的设备*/
@media (min-width: 1280px) {
 html{font-size: 22px;}
} /*>=1280的设备*/

@media (min-width: 1366px) {
 html{font-size: 24px;}
}
@media (min-width: 1440px) {
 html{font-size: 25px;}
}
@media (min-width: 1680px) {
 html{font-size: 28px;}
}
@media (min-width: 1920px) {
 html{font-size: 33px;}
}