style.css

@import url('https://fonts.googleapis.com/css2?family=Lato:wght@100;300;400;700;900&display=swap');

* {
  box-sizing: border-box;
}

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(90deg, rgba(45, 0, 28, 0.6) 2%, rgba(228, 16, 148, .6) 22%, rgba(255, 0, 159, 0.6) 100%), url(img/twice-fancy-you.jpg);
  background-size: cover;
  background-position: center;
  z-index: -1;
}

body {
  font-family: Lato, sans-serif;
  font-size: 16px;
}

h1 {
  font-size: 2rem;
  margin-bottom: .5em;
}

h1,
p#description {
  text-align: center;
  color: white;
  text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.4);
}

p#description {
  font-size: 1.25rem;
  font-style: italic;
  margin-bottom: 3em;
}

form {
  max-width: 800px;
  background-color: rgba(0, 0, 0, 0.8);
  margin: 0 auto;
  padding: 20px 40px;
  /* font-weight: 600; */
  border-radius: 5px;
  color: white;
}

.form-group {
  margin-bottom: 1.25em;
  font-size: 1.2rem;
}

input[type='text'],
input[type='email'],
input[type='number'],
select {
  display: block;
}

input[type='text'],
input[type='email'],
input[type='number'],
select,
textarea {
  margin-top: .8em;
  height: 40px;
  width: 100%;
  border-radius: 5px;
  border: 0;
  padding: 10px 10px;
  font-family: inherit;
}

textarea {
  height: 120px;
}

p.label {
  text-align: left;
  margin-bottom: 0;
}

.label-answer {
  font-size: 1rem;
  display: flex;
  align-items: center;
  margin: .8em 0;
}

input.input-choice {
  margin-right: .5em;
}

.clue {
  margin-left: 0.25rem;
  font-size: 0.9rem;
  color: #e4e4e4;
}

.submit-button {
  display: block;
  width: 100%;
  padding: 0.75rem;
  background: #0044ff;
  color: inherit;
  border-radius: 5px;
  border: 0;
  cursor: pointer;
}

@media screen and (max-width: 500px) {
  form {
    padding: 1em 1em;
  }
}