First of all you must know the following:

• Max viewport width.

• Min viewport width.

• Min font size.

• Max font size

• Clamp function in CSS.

Next Steps:

• Open this link Clamp Generator. There you have to put the values as shown below.

• So while building the website, consider you are using font size 16 px (min font size) for heading1 in mobile screen and 48 px in Desktop (maximum font size).

• And your screen sizes are 1920 for Desktop (max) and 375 for Mobile (min).

• So as you entered the values over there in the clamp generator you will get the clamp function as shown in the above snap.

• font-size: clamp(1rem, 0.5146rem + 2.0712vw, 3rem);

Usage:

h1 {
font-size: clamp(1rem, 0.5146rem + 2.0712vw, 3rem);
}

h2 {
font-size: clamp(0.875rem, 0.6019rem + 1.165vw, 2rem);
}

.body1{
font-size: clamp(1rem, 0.8786rem + 0.5178vw, 1.5rem);
}

Just copy and paste and you are ready to reuse these tags for all over the application or website as you can see in above snap.

So for every screen, the font-size will be based on the viewport which you are using.

Hope It will be helpful for you !

Thanks for reading ! Happy Coding !😁