미디어 쿼리는 다양한 화면 크기에 맞는 반응형 웹 사이트를 디자인하는 데 어떻게 도움이 됩니까?

@media screen and (max-width: 800px) {
  /* Styles for screens less than 800px wide */
}

/* Smartphones (portrait and landscape) */
@media only screen 
and (min-device-width : 320px) 
and (max-device-width : 480px) {
  /* Styles for smartphones in portrait and landscape */
}

/* Smartphones (landscape) */
@media only screen 
and (min-width : 321px) {
  /* Styles for smartphones in landscape */
}

/* Smartphones (portrait) */
@media only screen 
and (max-width : 320px) {
  /* Styles for smartphones in portrait */
}

/* iPads (portrait and landscape) */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) {
  /* Styles for iPads in portrait and landscape */
}

/* iPads (landscape) */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : landscape) {
  /* Styles for iPads in landscape */
}

/* iPads (portrait) */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : portrait) {
  /* Styles for iPads in portrait */
}

/* Desktops and laptops */
@media only screen 
and (min-width : 1224px) {
  /* Styles for desktops and laptops */
}

/* Large screens */
@media only screen 
and (min-width : 1824px) {
  /* Styles for large screens */
}

/* iPhone 4 - 5s */
@media
only screen and (-webkit-min-device-pixel-ratio : 1.5),
only screen and (min-device-pixel-ratio : 1.5) {
  /* Styles for iPhone 4 - 5s */
}

/* iPhone 6 */
@media
only screen and (max-device-width: 667px) 
only screen and (-webkit-device-pixel-ratio: 2) {
  /* Styles for iPhone 6 */
}

/* iPhone 6+ */
@media
only screen and (min-device-width : 414px) 
only screen and (-webkit-device-pixel-ratio: 3) {
  /* Styles for iPhone 6+ */
}

/* Samsung Galaxy S7 Edge */
@media only screen
and (-webkit-min-device-pixel-ratio: 3),
and (min-resolution: 192dpi)and (max-width:640px) {
 /* Styles for Samsung Galaxy S7 Edge */
}