Resolving Heading Color Issues in Light Theme

**Describe the bug**
while changing from a dark theme to a light theme color of some headings does not changing

**To Reproduce**
Steps to reproduce the behavior:
1. Go to '[(https://akshitagupta15june.github.io/PetMe/)]'
2. Click on the 'color theme changing icon'
3. Scroll down to 'Meet Our Friends Here heading'
4. See error

**Expected behavior**
Meet Our Friends Here heading color should change according to theme

**Screenshots**