Horizontal Divider Line

How To
1

Hello,
a noob question again.

I want to use a horizontal divider line with transparent start and end. I found some css:

hr.style-two {
border: 0;
height: 1px;
background-image: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0));
}

I just donĀ“t know how and where to put it in Bricks - maybe there is another way, anyway.

Any suggestions?