.ntd{
  text-decoration:none;
}
.nbr{
  border:none;
}
.red {
  color:red;
}
.orange {
  color:orange;
}
.yellow {
  color:yellow;
}
.green {
  color:green;
}
.blue {
  color:blue;
}
.navy {
  color:navy;
}
.purple {
  color:purple;
}
.geekble {
  color:rgb(0,255,180);
}
.btnsky {
  background-color:skyblue;
  font-size:25px;
}
.centre {
  margin:0 auto;
  text-align:center;
}