#logo-image{
    width: 25vw;
}
#project-main-mobile-img{
    display: none;
  }
/* Portrait phones */
@media (max-width: 767.98px) {
  #logo-image{
    width: 50vw;
}
  #project-main-desktop-img{
    display: none;
  }
  #project-main-mobile-img{
    display: block;
  }
}