Hello,
You can make the text bold by adding <b> & </b> tag before and after the text.
For eg: <b>heading</b>
Here, I am providing you a video of how to make second line different from the first one and CSS to adjust the font-size as per your requirement.
Link of the video: https://screenpresso.com/=kwfEb
To change the color and font-size of the feature text heading, you just all have to paste the below CSS code in the custom CSS field of your dashboard.
.content-info.home h2 {
font-size: 40px !important;
color: blue !important;
}
To adjust the font-size of second line heading of feature text heading, code is below.
.line {
font-size: 31px !important;
}
Note: Change numeric value as per your requirement.
Hope it will resolve your issue
Thanks!