Question: I have a strange problem on a small page I made.

When the content extends the height of the browser and I scroll down fast, the pixelated box appears for a split of a second and then goes away.

[![](https://i.imgur.com/RVALU4H.png "Hosted by imgur.com")](https://imgur.com/RVALU4H)  

Why is this happening and how can I fix this?

Answer: 
```
typedef enum {Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday, Last} Day;
void DoSomething(Day day){
   // if day < Last ...
}

```
If you write DoSomething(74) statement in your code modern compiler generate warning saying DoSomething expect enum but integer is passed.

But if you are passing a value from user input where any value can be passed to DoSomething() then you will have to take care as other advised.