html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}
/* Menu cha */
.navbar-nav > li {
    position: relative;
}

/* Menu con cấp 1 */
.navbar-nav li ul {
    display: none;
    position: absolute;
    top: 100%; 
    left: 0;
    min-width: 200px;
    background: #fff;
    border: 1px solid #ddd;
    z-index: 1000;
}

/* Hiển thị khi hover */
.navbar-nav li:hover > ul {
    display: block;
}

/* Item con */
.navbar-nav li ul li {
    list-style: none;
}

.navbar-nav li ul li a {
    display: block;
    padding: 8px 15px;
    color: #333;
    text-decoration: none;
}

.navbar-nav li ul li a:hover {
    background: #f5f5f5;
}

/* Menu con cấp 2 trở đi */
.navbar-nav li ul li ul {
    top: 0;
    left: 100%;
}
@media (max-width: 430px) {
  .two-col-layout{
    display: flex;
    flex-direction: column-reverse;
  }
}