body{
    		width: 100%;
    		height: 100%;
    		padding: 0;
    		margin: 0;
    	}
    	.index_box{
                	width: 100%;
                	height: 100%;
    	}
    	.index_box img{
    	   width: 100%;
                        
    	}
            .qrcode_hover{
                width: 4%;
                height: 7%;
                position: absolute;
                top: 31%;
                left: 44%;
                cursor: pointer;
            }
            .link_hover{
                width: 4%;
                height: 7%;
                position: absolute;
                top: 31%;
                left: 52%;
                cursor: pointer;
            }
            .qrcode_img{
                    position: relative;
                    width: 230%;
                    top: -75%;
                    left: 120%;
                    display: none;
                }
            .triangle{
                    width: 0;
                    height: 0;
                    position: absolute;
                    left: -20%;
                    top: 37%;
                    border-top: 1vw solid transparent;
                    border-right: 1vw solid #fff;
                    border-bottom: 1vw solid transparent;
                    border-left: 1vw solid transparent;background-size:
            }