You can override any style with styles defined in /assets/css/style.css or /assets/css/style.scss files. This is to support config based styling which needs jekyll variables.
You can add css to any page through the css_style variable in front matter.
---
css_style: |
.Link-btn {
background: rgba(0.1, 0.1, 0.1, 0.4);
color: #FFFF;
}
h1 {
color: #FFFF;
}
---