body {
  background: linear-gradient(to bottom, #0e83aa 0%, #d01a75 100%);
  font-family: Arial, Helvetica, sans-serif;
  color: white;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  text-align: center;
  margin: 0;
}

.head {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

h3 {
  margin-bottom: 20px;
}

#guessnumber {
  border-radius: 7px;
  height: 40px;
  width: 250px;
  border: 3px solid #d01a75;
  text-align: center;
  background-color: #90e5f4;
  font-size: 15px;
  margin-bottom: 10px;
}

.check, .reset {
  margin: 8px;
  padding: 10px 20px;
  background-color: #e8358e;
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 5px;
  font-size: 16px;
  transition: 0.3s;
}

button:hover {
  background-color: #980c52;
}

#result {
  font-size: 18px;
  margin-top: 20px;
}

#score,
#highscore {
  font-size: 18px;
  font-weight: bold;
  margin-top: 10px;
}

/* Responsive */
@media only screen and (max-width: 600px) {
  h1 {
    font-size: 2rem;
  }

  input {
    width: 150px;
    font-size: 14px;
    padding: 8px;
  }

  button {
    width: 120px;
    font-size: 14px;
    padding: 8px;
  }

  #result,
  #score,
  #highscore {
    font-size: 16px;
  }
}