body {
    margin: 0px;
    
    
}




#gkim{
    background-image: url(../images/gkim.png);
    background-size: cover;
    background-position: center center;
    position: relative;
    top:0;
    bottom:0;
    height: 100vh;
    z-index: -10;
    

    
    
    
}