*{
    box-sizing: border-box;
    padding:0;
}
body,html{
    padding: 0;
}
div{
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
}
@media screen and  (max-width:600px){
    img{
        width: 100%;
        height: 100%;
    }
  
}