how to reduce font size in html code example

Example 1: html font size

<span style="font-size:20px;"></span>

Example 2: how to increase font size in html

font-size: 25px;

Example 3: html font size

font-size:20px;

"default size is : +-16px;"

Example 4: how to increaase font size on html

<font size="+2">This is bigger text.</font>

Example 5: css font size

// to scale font size in relation to its parent element
style="font-size: 2vw;"