#main{
  width: 50%;
  margin: auto;
  text-align: center;
}

.alph{
  text-align: center;
  

}


.red{
  background-color: red;
}

.green{
  background-color: green;
}

.blue{
  background-color: blue;
}

.yellow{
  background-color: yellow;
}
.purple{
  background-color: purple;
}