html {
    height: 601px;
}

body {
    font-family: Roboto, sans-serif;
}

#content {
    width: 100%;
    height: auto;
    margin: 0 auto;
    
}

#d {
    display: block;
    width: 600px;
}

#m {
    display: none;
}

@media only screen and (max-width:500px) {
  #m {
    display: block;
    width: 370px;
}

  #d {
    display: none;
}

}

@media only screen and (max-width:360px) {
  #m {
    display: block;
    width: 310px;
}

  #d {
    display: none;
}

}