I have visual force pages where i have put custom CSS and everything was working fine till yesterday. For eg I have CSS file style.css which i have included at the top my my salesforce page and it has the below code
At initial page load my page is taking the CSS from my style.css file.
Today morning i checked that whenever i re-render some portion of the page, my custom CSS is lost and it gets replaced by salesforce CSS coming from common.css file.
Till yesterday everything was perfectly working. I have not done any changes into my code. Dont know why this is happeneing. Any knowledge ?
Update: This issue only happens when my style is in separate static resource. If i paste the CSS into the page directly, then it works fine. But i cannot put the styles into the page.