For Activity/Post Header customization (Gradient Background):
Note: Remove duplicate css code
.activity-header {
background: linear-gradient(black, red);
}

How to choose your own color?
1. search “color picker” on google.com
2. select your preferred color and copy the “#——” value from HEX field.
3. Go to your CSS code.
4. replace the values in your code with your preferred color.
Note: color values may be name (ex. “red, white, green, etc.”) or HEX (ex. ” #000000, #fff, #f3e001“) or…Read More