My website is having issue with Lightspeedcache plugin

#1
Hi there,
My website had a global heading font colour before. Which I changed from blue to pink. But when I visit the website I can still see the old heading text colour. But only the time of loading. After getting fully loaded, there is no issue. Issue persist only when the website loads. Please tell what causes this issue? This is the URL: https://www.aviothiceducationacademy.in/
 
Top