body{background-image:url("../image/fx_back_01.png");
    background-position:center;
    background-size:contain;
    background-repeat:no-repeat;
}
.back{
    position:relative;
        
    margin:auto auto;
    background-image:url("../image/fx_back_01.png");
    background-position:center;
    background-size:contain;
    background-repeat:no-repeat;

    
    
}
#login{
    position:relative;
    padding-top:2em;
    margin:auto,auto;
 
    width:400px;
    margin:auto auto;
    height: 290px;
  
}
.welcom{
    padding-top:2em;
     position:relative;
     width:600px;
     height: 10px;
    background-image:url("../image/welcome.jpg");
    background-repeat:no-repeat;
    margin:auto auto;

}