it is normal if I using design mode
However, when I use mobile to visit the website, it becomes…
Help…
You have set overflow: hidden to the navbar (.navbar_1) on mobile. Try setting that to overflow: visible on mobile and you should be fine. See below;
https://cl.ly/1dc22309020c/Screen%20Recording%202018-09-10%20at%2012.40.28.92%20PM.mp4
I used the inspector since there is no link to your project but you can change this in the designer.