Ajax Loader
×

Untitled

HTML
<input type="text" required pattern="^P[0-9]+$" />
1
<input type="text" required pattern="^P[0-9]+$" />
 
CSS
input:invalid {
1
input:invalid {
2
  background: red;
3
}
4
 
5
input:valid {
6
  background: green;
7
}
 

Untitled

CSSDeck G+