body {
  margin: 0;
  padding: 0;
  height: 100vh;                          
  display: flex;                         
  justify-content: center;              
  align-items: center;                  
  flex-direction: column;               
  background-color: #FCFAF9;
  color: black;
  font-family: 'Fredoka', sans-serif;
}

h1 {
  font-family: 'Fredoka', sans-serif;
  font-size: 15rem;
}

.button {
  background-color: #a5d687; 
  color: white;
  border: none;
  padding: 18px 34px;
  font-size: 5rem;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
 font-family: 'Fredoka', sans-serif;
  transition: background-color 0.3s ease;
}

.button:hover {
  background-color: #90bc5a;  /* I tweaked hover color so you see a difference */
}