@import url('https://fonts.googleapis.com/css2?family=Indie+Flower&family=Roboto+Mono&display=swap');

body,
input,
textarea,
button {
  margin: 0;
  padding: 0;
  font-family: 'Roboto Mono', monospace;
}

header {
  display: flex;
  justify-content: space-between;
  padding: 0 4rem;
  margin: 1rem;
  align-items: center;
}

.vertical-line {
  border-left: 3px solid #000;
  height: 2rem;
}

.list-item > a {
  text-decoration: none;
  color: #000;
}

.list-item > a:hover {
  text-decoration: underline;
}

.list-items-container {
  display: flex;
  list-style: none;
  gap: 3rem;
}

.main-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 10rem;
  gap: 1rem;
}

.main-container > h1 {
  text-align: center;
}

.books,
fieldset,
input,
button,
header,
footer {
  border: 2px solid #000;
}

.book-info {
  display: flex;
  flex-direction: row;
  gap: 2em;
  justify-content: space-around;
}

.book-info:nth-of-type(odd) {
  background-color: rgb(185, 185, 185);
}

.remove-book {
  width: 6rem;
  height: 2rem;
  align-self: center;
  position: absolute;
  right: 14rem;
}

.books,
form {
  width: 60rem;
}

#fieldset-1 {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
}

input {
  width: 18rem;
}

#add-book {
  width: 6rem;
  margin-right: -12rem;
}

button:hover {
  cursor: pointer;
  background-color: #000;
  color: #fff;
}

.contact-section {
  position: absolute;
  top: 14rem;
}

footer {
  display: flex;
  justify-content: center;
  margin: 3rem 1rem;
}

.hidden {
  visibility: hidden;
}