max-width media queries code example

Example 1: media query

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

Example 2: media queries css responsive max width

@media only screen and (max-width: size in px) {
  All of your css here
}

Example 3: what is a max and min width media query

/* What this query really means, is If [device width] is less than or equal to 600px, then do */
@media only screen and (max-width: 600px)  {...}

/* What this query really means, is If [device width] is greater than or equal to 600px, then do */
@media only screen and (min-width: 600px) {...}