Is the seat of the toilet seat connected to the toilet lid changed?

This problem is a bit complicated, you must have a professional master to get it, it is recommended to find the master of the after-sales or decoration company to change it for you.

Yes, there are screws in the lid.

Find the screw cap, remove it with a live handler, and replace it with a new one. Generally, the position of the screw cap is not easy to find, some are in the light, and some are in the dark. In the dark place of the screw cap, inside the toilet bowl against the side of the tank, open the lid.

This is the most common toilet seat, you have to measure the length and width of your toilet mouth at home, and then go to a nearby store to buy it. It can't be fixed like this.

Yes, it's very cheap, the general toilet is two sizes, you roughly measure it, tell the one who sells the toilet, that is, dozens of dollars.