Ok，Finally get it down, I am using a different theme GoodSpace. It took me sometime to find the code.
Thanks a lot for your instruction.
I don’t know where the `.entry-content img, .entry-content iframe {
display: block;
}` can be found from my console
The link http://www.truenaturewellness.com.au/mental-health/nlp-and-fertility/ provided previously can show the problem unsolved.
I’ve confront exactly the same problem, It took me 2days, but do not know how to fix
