style.css

body {
  background-image: linear-gradient(
      rgba(11, 2, 26, 0.75),
      rgba(14, 1, 32, 0.75)
    ),
    url(https://cdn.freecodecamp.org/testable-projects-fcc/images/survey-form-background.jpeg);
  background-position: center;
  background-size: cover;
  height: 100vh;
  background-repeat: no-repeat;
  color: rgb(237, 240, 212);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  font-size: larger;
  background-attachment: fixed;
}
.container {
  margin: 0px auto 0px auto;
  max-width: 600px;
}
h1 {
  text-align: center;
}
#description {
  font-style: italic;
  text-align: center;
}
form {
  background-color: rgba(0, 0, 0, 0.4);
}
label {
  display: block;
  margin-bottom: 8px;
}
.form-group {
  margin-bottom: 20px;
  padding: 4px;
}
.form-control {
  display: block;
  width: 100%;
  padding: 6px 12px 6px 12px;
  margin: 0px;
  font-size: inherit;
  box-sizing: border-box;
  border-radius: 2%;
}

.input-textarea {
  padding: 5px;
  width: 100%;
  height: 120px;
  font-size: inherit;
  resize: vertical;
}
.submit-button {
  width: 100%;
  padding: 10px;
  font-size: inherit;
  background-color: rgb(64, 187, 64);
  color: inherit;
}
.submit-button:hover {
  background-color: rgb(5, 56, 11);
  color: rgb(224, 255, 110);
  cursor: pointer;
}

@media (max-width: 1500px) {
  form {
    padding: 30px;
  }
}