css font-size responsive to container code example

Example 1: responsive font-size

/* please refer to https://developer.mozilla.org/fr/docs/Web/CSS/clamp() */
font-size: clamp(40px, 10vw, 70px); /* clamp(MIN, VAL, MAX) */

Example 2: css text to fit container

//The viewport-percentage lengths are relative to the size of the initial
//containing block. When the height or width of the initial containing block
//are changed, they are scaled accordingly.
//vw = (% of the viewport width). So using it will look like this:
p {
    font-size: 2.5vw;
}