Answers for "text size responsive mobile bootstrap"

bootstrap 4 responsive paragraph

<p class="lead">
  Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Duis mollis, est non commodo luctus.
</p>

change font size on large screen resolution bootstrap

/* 
Extra small devices (portrait phones, less than 544px) 
No media query since this is the default in Bootstrap because it is "mobile first"
*/
h1 {font-size:1rem;} /*1rem = 16px*/
/*
####################################################
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) {  
  h1 {font-size:1.5rem;} /*1rem = 16px*/
}
 
/* Medium devices (tablets, 768px and up) The navbar toggle appears at this breakpoint */
@media (min-width: 768px) {  
  h1 {font-size:2rem;} /*1rem = 16px*/
}
 
/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) { 
  h1 {font-size:2.5rem;} /*1rem = 16px*/
}
 
/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {  
  h1 {font-size:3rem;} /*1rem = 16px*/    
}
 
/*
::::::::::::::::::::::::::::::::::::::::::::::::::::
Custom media queries
*/
 
/* Set width to make card deck cards 100% width */
@media (min-width: 950px) and (max-width:1100px) { 
  h1 {font-size:2.75rem;color:red;} 
}