body {
  font-family: Arial, sans-serif;
  background-color: lightblue;
  text-align: center;
}

#welcome-screen {
  margin-top: 50px;
}

#welcome-screen button {
  background-color: green;
  color: white;
  padding: 15px 30px;
  font-size: 18px;
  border: none;
  border-radius: 8px;
}

.survey-box {
  margin: 50px auto;
  padding: 20px;
  width: 300px;
  background-color: #b0c4de;
  border-radius: 20px;
}

.rating-button {
  display: inline-block;
  margin: 5px;
  width: 40px;
  height: 40px;
  line-height: 40px;
  border-radius: 50%;
  border: 2px solid black;
  background-color: white;
  color: black;
  cursor: pointer;
}

.rating-button.selected {
  background-color: red;
  color: white;
}

.nav-buttons {
  margin-top: 20px;
}

#prevBtn {
  background-color: blue;
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 10px;
}

#nextBtn {
  background-color: hotpink;
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 10px;
}