I\'m building a responsive web app with Bootstrap 4. I want the font size of all text to be reduced on mobile devices compared to desktop, so I added the following to my bas
I think the easiest way is to use @media Queries. Suppose you want to change the font size responsively for a content with class "class-name" or even for entire html tag, just add your media queries to end of your css file or any place inside it.
Sample code:
/*
####################################################
M E D I A Q U E R I E S
####################################################
*/
/*
::::::::::::::::::::::::::::::::::::::::::::::::::::
Bootstrap 4 breakpoints
*/
/* Small devices (landscape phones, 544px and up) */
@media (min-width: 544px) {
.class-name {font-size: 16px;}
}
/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
.class-name {font-size: 30px;}
}
/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
.class-name {font-size: 40px;}
}
/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
.class-name {font-size: 48px;}
}
more information can be found here