main {
  margin-top: 70px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.navbar {
  background-color: white;
  width: 98% !important;
  border: 2px solid black !important;
  top: 10px;
  left: 1%;
  z-index: 5;
}

.nav-item {
  border-right: 1px solid black;
  cursor: pointer;
}

h1 {
  text-align: center;
}

#booksTable {
  border: 1px solid black;
  width: 90%;
}

#newBook {
  padding: 15px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#addNewForm {
  padding: 5px;
}

form h2 {
  width: 100%;
  text-align: center;
  margin: 20px 0 !important;
}

input {
  text-align: center;
  margin: 10px 0 !important;
  width: 100%;
}

.btn {
  margin-left: 200px;
}

.nav-link:hover,
.navbar-brand:hover {
  color: green !important;
}

footer {
  position: fixed;
  width: 98%;
  margin-left: 1%;
  bottom: 10px;
  background-color: white;
  z-index: 5;
}

#contact {
  display: none;
  margin-bottom: 100px;
  padding: 15px;
}

#contact > h2 {
  text-align: center;
  margin: 20px 0;
}

#booksLibrary {
  display: none;
  margin-bottom: 100px;
}

@media (max-width: 768px) {
  .nav-item {
    border-right: none;
  }
}