How does the video result a tag in Google search prohibit dragging?

for example, the search result
https://www.google.com.hk/sea.

clipboard.png

I tried to drag this place to make sure it was an a tag, but I couldn"t drag it. After reading the CSS attribute, there is no user-select,. I don"t know how to implement it. I"m curious.

Oct.22,2021

ele.ondragstart = e => e.preventDefault()
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e528fb-4413a.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e528fb-4413a.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?