body {
  font-family: sans-serif;
  font-size: 14px;
  padding: 10px;
}
button {
  padding: 4px 8px;
  font-size: 12px;
  cursor: pointer;
  margin-right: 5px;
}
#clickBtn {
  padding: 10px 20px;
  font-size: 14px;
  font-weight: bold;
  margin-bottom: 5px;
}
.res {
  color: red;
  border: 1px solid red;
  background: none;
  margin-top: 15px;
}