* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: 'Montserrat', sans-serif;
}
body {
  background-color: #1d2d50;
}

input,
button {
  font-size: 16px;
}

.head_bar {
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #133b5c;
  color: #fcdab7;
}

main {
  max-width: 800px;
  width: 80%;
  margin: 0 auto;
  padding: 16px;
}

.input_section {
  display: flex;
  flex-direction: column;
  padding: 16px;
  border-radius: 5px;
  background-color: #133b5c;
}

.input_section > h2 {
  text-align: center;
  color: #fcdab7;
}

.input_section > form > .input {
  padding: 10px;
}

.input_section > form > button {
  background-color: #1e5f74;
  color: #fcdab7;
  border: 0;
  border-radius: 5px;
  display: block;
  width: 100%;
  padding: 8px;
  cursor: pointer;
}

.input_section > form > .input > input {
  display: block;
  width: 100%;
  padding: 10px;
  border: none;
  background-color: #133b5c;
  color: #fcdab7;
}

.input_section > form > .input > input:focus {
  background-color: #133b5c;
  outline: none;
}

.input_section > form > .input > label {
  color: #fcdab7;
}

.input_section > form > .input_inline {
  margin: 12px 0;
  display: flex;
  align-items: center;
}

.input_section > form > .input_inline > input[type='checkbox'] {
  margin: 8px;
}

.input_section > form > .input_inline > label {
  color: #fcdab7;
  margin-right: 10px;
}

.search_section {
  margin: 16px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px;
  border-radius: 5px;
  background-color: #133b5c;
}

.search_section > label > h2 {
  color: #fcdab7;
}

.search_section > form {
  padding: 16px;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 0.5fr;
  grid-gap: 10px;
  color: #fcdab7;
}

.search_section > form > input {
  width: 100%;
  padding: 5px;
  outline: none;
  border-radius: 15px 5px 15px 5px;
  color: #fcdab7;
  border: 2px solid #fcdab7;
  background-color: #133b5c;
}

.search_section > form > button {
  background-color: #1e5f74;
  color: white;
  border: 0;
  border-radius: 5px;
  cursor: pointer;
  padding: 10px;
}

.book_shelf {
  margin: 16px 0 0 0;
  padding: 16px;
  border-radius: 5px;
  background-color: #133b5c;
}

.book_shelf > h2 {
  color: #fcdab7;
}

.book_shelf > .book_list {
  padding: 16px;
}

.book_shelf > .book_list > .book_item {
  padding: 8px 16px 16px 16px;
  border-radius: 5px;
  margin: 10px 0;
  background-color: #1e5f74;
}

.book_shelf > .book_list > .book_item > h3,
p {
  margin: 8px 0;
  color: #fcdab7;
}

.book_shelf > .book_list > .book_item > .action > button {
  border: 0;
  padding: 5px;
  margin: 0 5px 10px 0;
  border-radius: 5px;
  cursor: pointer;
}

.book_shelf > .book_list > .book_item > .action > .green {
  color: white;
  background-color: rgb(47, 112, 47);
}

.book_shelf > .book_list > .book_item > .action > .red {
  background-color: rgb(134, 41, 41);
  color: white;
}
footer {
  bottom: 0;
  padding: 25px 20px;
  text-align: center;
  color: #fcdab7;
}

footer > a {
  color: #fcdab7;
  text-decoration: none;
}
footer > hr {
  margin: 10px 20px;
}