* {
  margin: 0%;
  padding: 0%;
  font-family: Georgia, 'Times New Roman', Times, serif;
}

.navbar {
  background-color: red;
  border-radius: 10px;
  margin: 5px;
  padding: 15px;
}

.book-container {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
}

.content-box {
  width: 25%;
  background-color: black;
  color: white;
  border-radius: 10px;
  margin-top: 50px;
  margin-left: 30px;
  padding: 15px;

  h2 {
    color: red;
  }

  h3 {
    color: aqua;
  }
}

.delete-button {
  background-color: red;
  font-size: 15px;
  border: none;
  border-radius: 3px;
  padding: 7px;
  margin-top: 10px;
  font-weight: bold;
}

p {
  font-size: 20px;
  padding-top: 10px;
  font-style: italic;
}

.add-button {
  background-color: red;
  width: 100px;
  height: 100px;
  border: none;
  border-radius: 100%;
  position: fixed;
  bottom: 30px;
  right: 3%;
  font-size: 70px;
  font-weight: bolder;
  text-align: center;
  z-index: 1;
}

.popup-overlay {
  background-color: black;
  opacity: 0.7;
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0%;
  left: 0%;
  display: none;
}

.popup-box {
  background-color: red;
  width: 40%;
  padding: 40px;
  border-radius: 10px;
  position: fixed;
  top: 30%;
  left: 30%;
  z-index: 2;
  font-size: 20px;
  display: none;

  button {
    background-color: black;
    color: white;
    padding: 15px;
    border: none;
    border-radius: 5px;
    margin: 5px;
    font-size: 15px;
  }

  input {
    background: transparent;
    border: none;
    padding: 5px;
    margin: 5px;
    width: 100%;
    border-bottom: solid black 2px;
    font-size: 20px;
  }

  textarea {
    background: transparent;
    padding: 5px;
    margin: 5px;
    width: 100%;
    border: solid black 2px;
    font-size: 20px;
  }

  input::placeholder {
    color: black;
  }

  textarea::placeholder {
    color: black;
  }

  input:focus {
    outline: none;
  }

  textarea:focus {
    outline: none;
  }
}