bootstrap font size

CSS
font-weight-boldbody {
font-family: -apple-system, BlinkMacSystemFont, “Segoe UI”, Roboto, “Helvetica Neue”, Arial, sans-serif, “Apple Color Emoji”, “Segoe UI Emoji”, “Segoe UI Symbol”;
/* default is 1rem or 16px */
font-size: 20px;
font-weight: 400;
line-height: 1.5;
}
 
/* Increase all font sizes on mobile */
@media (max-width: 767px) { 
 
body {
/* default is 1rem or 16px */
font-size: 25px;
}
 
}
Source

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