body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #f4f4f4;
  font-family: Arial, sans-serif;
}

.center-box {
  width: 450px;
  max-width: calc(100% - 64px);
  padding: 30px;
  background-color: white;
  border: 1px solid #ddd;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  text-align: center;
  font-size: 18px;
  line-height: 1.6;
  color: #222;
  box-sizing: border-box;
}


.center-box div {
  display: block;
  margin-bottom: 10px;
}

.center-box div:last-child {
  margin-bottom: 0;
}