.conf2022 {
	float:left;
	width:100%;
    position: relative;
    padding-top:246px;
}

.conf2022 a {
    display: block;
    position: absolute;
    left: 0;
    top: -151px;
    width: 100%;
    height: 800px; 
z-index:8;
    background: url(../image/bg_2022.png);
    background-repeat: no-repeat;
    background-position: center top;
}