html, body {
  margin: 0;
  padding: 0;
}

body {
  background-color: #303658;
}

#content {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.mobile-img {
  width: 95vw;
  display: none;
}

.desktop-img {
  width: 80vw; 
  height: auto; 
  max-height: 98vh;
}

@media (max-width: 650px) {
  #content {
    height: auto;  
  }

  .mobile-img {
    display: block;  
  }

  .desktop-img {
    display: none;  
  }
}