css responsive size code example

Example 1: css media query responsive sizes

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

Example 2: how to make fonts respnsive

h1 {
  font-size: clamp(16px, 5vw, 34px);
}

Example 3: how to make font responsive

html { font-size: calc(1em + 1vw); }