Answers for "media queries for different screen sizes"

media query

@media only screen and (max-width: 600px) {
  body {
    background-color: lightblue;
  }
}

css media query responsive sizes

320px
480px
600px
768px
900px
1024px
1200px

how to combine two screen sizes in media queries css

@media (min-width: 30em) and (max-width: 50em) { ... }

screen sizes for css media

<meta name="viewport" content="width=device-width, initial-scale=1" />