I am having an issue trying to change the font size using CSS. I have been using the font-size property, and it was working before but no longer is. This is the code I was using and the result. I made it red so you can see the issue. I input 5 rem, but the font would not change sizes. Instead, the line height simply increased. Does anyone know a solution to this? Thank you!
@media only screen and (max-width: 640px) {#block-3f62cb3dfaedbf89b18f h4{
font-size:5rem !important;
background-color: red;
}}