body { 
  background-image: url(MitchitecLogoBlack2020Render.png); 
  background-position: center center; 
  background-repeat: no-repeat; 
  background-attachment: fixed; 
  /*background-size: contain; */
  background-color: #000; 
} 

/* 1. Large tablets and small laptops */
@media only screen and (max-width: 1600px) { 
  body { 
    background-image: url(MitchitecLogoBlack_medium_2020Render.png); 
    /* Other background properties are automatically inherited */
  } 
} 

/* 2. Mobile devices (placed LAST so it overrides the 1600px rule) */
@media only screen and (max-width: 767px) { 
  body { 
    background-image: url(MitchitecLogoBlack2020Render_mobile.png); 
  } 
}