body {
  font-family: Arial, sans-serif;
  text-align: center;
  background-color: #ffe6f0;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0;
  height: 100vh;
}

.main {
    position: relative;
    width: auto;
    height: auto;
}

h1 {
  font-size: 32px;
  width: 100vh;
}

button {
  padding: 10px 20px;
  font-size: 18px;
  margin: 10px;
  cursor: pointer;
}

#popup {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: white;
  padding: 20px;
  border: 2px solid black;
  box-shadow: 0 0 10px rgba(0,0,0,0.3);
}