html,
 body {
     width: 100%;
     min-height: 100%;
     margin: 0;
     padding: 0;
 }

 body {
     overflow-x: hidden;
 }

 /* Full màn hình */
 .app-container {
     width: 100%;
     max-width: 100%;
     padding-left: 18px;
     padding-right: 18px;
     margin: 0 auto;
 }

 /* Responsive tablet */
 @media (max-width: 992px) {
     .app-container {
         padding-left: 14px;
         padding-right: 14px;
     }
 }

 /* Responsive mobile */
 @media (max-width: 768px) {
     .app-container {
         padding-left: 10px;
         padding-right: 10px;
     }

     .navbar-brand {
         font-size: .95rem;
     }

     .navbar-text {
         font-size: .85rem;
     }
 }

 @media (max-width: 576px) {
     .app-container {
         padding-left: 8px;
         padding-right: 8px;
     }

     .navbar-text {
         display: none;
     }

     .navbar-brand {
         font-size: .9rem;
     }
 }