@Vani1012 I had similar issue. In my case, I had same page on other AEM version for comparison purpose and Observation was (For eg) parent container was having responsive-grid set to 8 columns for large screen size but to get correct rendition, my container component required 12 columns and child can not have more than parent. Hence, when tried to resize the component it was not working.
I override the css on the selectors by adding unique style class on the targeted component and changing the width to what I had on correct page.