CSS for Bootsrap 3 Dropdown Menu

gistfile1.css

.nav {
  margin-bottom: 0;
  padding-left: 0;
  list-style: none;
}
.nav > li {
  position: relative;
  display: block;
}
.nav > li > a {
  position: relative;
  display: block;
  padding: 10px 15px;
}
.nav > li > a:hover, .nav > li > a:focus {
  text-decoration: none;
  background-color: #eeeeee;
}
.nav > li.disabled > a {
  color: #999999;
}
.nav > li.disabled > a:hover, .nav > li.disabled > a:focus {
  color: #999999;
  text-decoration: none;
  background-color: transparent;
  cursor: not-allowed;
}
.nav .open > a, .nav .open > a:hover, .nav .open > a:focus {
  background-color: #eeeeee;
  border-color: #bb1315;
}

.navbar {
  position: relative;
  min-height: 50px;
  margin-bottom: 22px;
  border: 1px solid transparent;
}
@media (min-width: 768px) {
  .navbar {
    border-radius: 4px;
  }
}

@media (min-width: 768px) {
  .navbar-header {
    float: left;
  }
}

.navbar-collapse {
  overflow-x: visible;
  padding-right: 15px;
  padding-left: 15px;
  border-top: 1px solid transparent;
  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
          box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
  -webkit-overflow-scrolling: touch;
}
.navbar-collapse.in {
  overflow-y: auto;
}
@media (min-width: 768px) {
  .navbar-collapse {
    width: auto;
    border-top: 0;
    -webkit-box-shadow: none;
            box-shadow: none;
  }
  .navbar-collapse.collapse {
    display: block !important;
    height: auto !important;
    padding-bottom: 0;
    overflow: visible !important;
  }
  .navbar-collapse.in {
    overflow-y: visible;
  }
  .navbar-fixed-top .navbar-collapse, .navbar-static-top .navbar-collapse, .navbar-fixed-bottom .navbar-collapse {
    padding-left: 0;
    padding-right: 0;
  }
}

.navbar-fixed-top .navbar-collapse,
.navbar-fixed-bottom .navbar-collapse {
  max-height: 340px;
}
@media (max-width: 480px) and (orientation: landscape) {
  .navbar-fixed-top .navbar-collapse,
  .navbar-fixed-bottom .navbar-collapse {
    max-height: 200px;
  }
}

.container > .navbar-header,
.container > .navbar-collapse,
.container-fluid > .navbar-header,
.container-fluid > .navbar-collapse {
  margin-right: -15px;
  margin-left: -15px;
}
@media (min-width: 768px) {
  .container > .navbar-header,
  .container > .navbar-collapse,
  .container-fluid > .navbar-header,
  .container-fluid > .navbar-collapse {
    margin-right: 0;
    margin-left: 0;
  }
}

.navbar-static-top {
  z-index: 1000;
  border-width: 0 0 1px;
}
@media (min-width: 768px) {
  .navbar-static-top {
    border-radius: 0;
  }
}

.navbar-fixed-top,
.navbar-fixed-bottom {
  position: fixed;
  right: 0;
  left: 0;
  z-index: 1030;
}
@media (min-width: 768px) {
  .navbar-fixed-top,
  .navbar-fixed-bottom {
    border-radius: 0;
  }
}

.navbar-fixed-top {
  top: 0;
  border-width: 0 0 1px;
}

.navbar-fixed-bottom {
  bottom: 0;
  margin-bottom: 0;
  border-width: 1px 0 0;
}

.navbar-brand {
  float: left;
  padding: 14px 15px;
  font-size: 20px;
  line-height: 22px;
  height: 50px;
}
.navbar-brand:hover, .navbar-brand:focus {
  text-decoration: none;
}
@media (min-width: 768px) {
  .navbar-brand {
    display: none;
  }
  .navbar > .container .navbar-brand, .navbar > .container-fluid .navbar-brand {
    margin-left: -15px;
  }
}

.navbar-toggle {
  position: relative;
  float: right;
  margin-right: 15px;
  padding: 9px 10px;
  margin-top: 8px;
  margin-bottom: 8px;
  background-color: transparent;
  background-image: none;
  border: 1px solid transparent;
  border-radius: 4px;
}
.navbar-toggle:focus {
  outline: 0;
}
.navbar-toggle .icon-bar {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 1px;
}
.navbar-toggle .icon-bar + .icon-bar {
  margin-top: 4px;
}
@media (min-width: 768px) {
  .navbar-toggle {
    display: none;
  }
}

.collapse {
  display: none;
}
.collapse.in {
  display: block;
}

.collapsing {
  position: relative;
  height: 0;
  overflow: hidden;
  -webkit-transition: height .35s ease;
          transition: height .35s ease;
}

.navbar-nav {
  margin: 7px -15px;
  list-style: none;
}
.navbar-nav > li > a {
  padding-top: 10px;
  padding-bottom: 10px;
  line-height: 22px;
}
@media (max-width: 767px) {
  .navbar-nav .open .dropdown-menu {
    position: static;
    float: none;
    width: auto;
    margin-top: 0;
    background-color: transparent;
    border: 0;
    -webkit-box-shadow: none;
            box-shadow: none;
  }
  .navbar-nav .open .dropdown-menu > li > a,
  .navbar-nav .open .dropdown-menu .dropdown-header {
    padding: 5px 15px 5px 25px;
  }
  .navbar-nav .open .dropdown-menu > li > a {
    line-height: 22px;
  }
  .navbar-nav .open .dropdown-menu > li > a:hover, .navbar-nav .open .dropdown-menu > li > a:focus {
    background-image: none;
  }
}
@media (min-width: 768px) {
  .navbar-nav {
    float: left;
    margin: 0;
  }
  .navbar-nav > li {
    float: left;
  }
  .navbar-nav > li > a {
    padding-top: 14px;
    padding-bottom: 14px;
  }
  .navbar-nav.navbar-right:last-child {
    margin-right: -15px;
  }
}

@media (min-width: 768px) {
  .navbar-left {
    float: left !important;
  }

  .navbar-right {
    float: right !important;
  }
}
.navbar-form {
  margin-left: -15px;
  margin-right: -15px;
  padding: 10px 15px;
  border-top: 1px solid transparent;
  border-bottom: 1px solid transparent;
  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 1px 0 rgba(255, 255, 255, 0.1);
          box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 1px 0 rgba(255, 255, 255, 0.1);
  margin-top: 7px;
  margin-bottom: 7px;
}
@media (max-width: 767px) {
  .navbar-form .form-group {
    margin-bottom: 5px;
  }
}
@media (min-width: 768px) {
  .navbar-form {
    width: auto;
    border: 0;
    margin-left: 0;
    margin-right: 0;
    padding-top: 0;
    padding-bottom: 0;
    -webkit-box-shadow: none;
            box-shadow: none;
  }
  .navbar-form.navbar-right:last-child {
    margin-right: -15px;
  }
}

.navbar-nav > li > .dropdown-menu {
  margin-top: 0;
  border-top-right-radius: 0;
  border-top-left-radius: 0;
}

.navbar-fixed-bottom .navbar-nav > li > .dropdown-menu {
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}

.navbar-btn {
  margin-top: 7px;
  margin-bottom: 7px;
}
.navbar-btn.btn-sm {
  margin-top: 8.5px;
  margin-bottom: 8.5px;
}
.navbar-btn.btn-xs {
  margin-top: 14px;
  margin-bottom: 14px;
}

.navbar-text {
  margin-top: 14px;
  margin-bottom: 14px;
}
@media (min-width: 768px) {
  .navbar-text {
    float: left;
    margin-left: 15px;
    margin-right: 15px;
  }
  .navbar-text.navbar-right:last-child {
    margin-right: 0;
  }
}

.navbar-default {
  background-color: #f8f8f8;
  border-color: #e7e7e7;
}
.navbar-default .navbar-brand {
  color: #777777;
}
.navbar-default .navbar-brand:hover, .navbar-default .navbar-brand:focus {
  color: #5e5e5e;
  background-color: transparent;
}
.navbar-default .navbar-text {
  color: #777777;
}
.navbar-default .navbar-nav > li > a {
  color: #777777;
}
.navbar-default .navbar-nav > li > a:hover, .navbar-default .navbar-nav > li > a:focus {
  color: #333333;
  background-color: transparent;
}
.navbar-default .navbar-nav > .active > a, .navbar-default .navbar-nav > .active > a:hover, .navbar-default .navbar-nav > .active > a:focus {
  color: #555555;
  background-color: #e7e7e7;
}
.navbar-default .navbar-nav > .disabled > a, .navbar-default .navbar-nav > .disabled > a:hover, .navbar-default .navbar-nav > .disabled > a:focus {
  color: #cccccc;
  background-color: transparent;
}
.navbar-default .navbar-toggle {
  border-color: #dddddd;
}
.navbar-default .navbar-toggle:hover, .navbar-default .navbar-toggle:focus {
  background-color: #dddddd;
}
.navbar-default .navbar-toggle .icon-bar {
  background-color: #888888;
}
.navbar-default .navbar-collapse,
.navbar-default .navbar-form {
  border-color: #e7e7e7;
}
.navbar-default .navbar-nav > .open > a, .navbar-default .navbar-nav > .open > a:hover, .navbar-default .navbar-nav > .open > a:focus {
  background-color: #e7e7e7;
  color: #555555;
}
@media (max-width: 767px) {
  .navbar-default .navbar-nav .open .dropdown-menu > li > a {
    color: #777777;
  }
  .navbar-default .navbar-nav .open .dropdown-menu > li > a:hover, .navbar-default .navbar-nav .open .dropdown-menu > li > a:focus {
    color: #333333;
    background-color: transparent;
  }
  .navbar-default .navbar-nav .open .dropdown-menu > .active > a, .navbar-default .navbar-nav .open .dropdown-menu > .active > a:hover, .navbar-default .navbar-nav .open .dropdown-menu > .active > a:focus {
    color: #555555;
    background-color: #e7e7e7;
  }
  .navbar-default .navbar-nav .open .dropdown-menu > .disabled > a, .navbar-default .navbar-nav .open .dropdown-menu > .disabled > a:hover, .navbar-default .navbar-nav .open .dropdown-menu > .disabled > a:focus {
    color: #cccccc;
    background-color: transparent;
  }
}
.navbar-default .navbar-link {
  color: #777777;
}
.navbar-default .navbar-link:hover {
  color: #333333;
}
.navbar-default .btn-link {
  color: #777777;
}
.navbar-default .btn-link:hover, .navbar-default .btn-link:focus {
  color: #333333;
}
.navbar-default .btn-link[disabled]:hover, .navbar-default .btn-link[disabled]:focus, fieldset[disabled] .navbar-default .btn-link:hover, fieldset[disabled] .navbar-default .btn-link:focus {
  color: #cccccc;
}

.navbar-inverse {
  background-color: #222222;
  border-color: #090909;
}
.navbar-inverse .navbar-brand {
  color: #999999;
}
.navbar-inverse .navbar-brand:hover, .navbar-inverse .navbar-brand:focus {
  color: white;
  background-color: transparent;
}
.navbar-inverse .navbar-text {
  color: #999999;
}
.navbar-inverse .navbar-nav > li > a {
  color: #999999;
}
.navbar-inverse .navbar-nav > li > a:hover, .navbar-inverse .navbar-nav > li > a:focus {
  color: white;
  background-color: transparent;
}
.navbar-inverse .navbar-nav > .active > a, .navbar-inverse .navbar-nav > .active > a:hover, .navbar-inverse .navbar-nav > .active > a:focus {
  color: white;
  background-color: #090909;
}
.navbar-inverse .navbar-nav > .disabled > a, .navbar-inverse .navbar-nav > .disabled > a:hover, .navbar-inverse .navbar-nav > .disabled > a:focus {
  color: #444444;
  background-color: transparent;
}
.navbar-inverse .navbar-toggle {
  border-color: #333333;
}
.navbar-inverse .navbar-toggle:hover, .navbar-inverse .navbar-toggle:focus {
  background-color: #333333;
}
.navbar-inverse .navbar-toggle .icon-bar {
  background-color: white;
}
.navbar-inverse .navbar-collapse,
.navbar-inverse .navbar-form {
  border-color: #101010;
}
.navbar-inverse .navbar-nav > .open > a, .navbar-inverse .navbar-nav > .open > a:hover, .navbar-inverse .navbar-nav > .open > a:focus {
  background-color: #090909;
  color: white;
}
@media (max-width: 767px) {
  .navbar-inverse .navbar-nav .open .dropdown-menu > .dropdown-header {
    border-color: #090909;
  }
  .navbar-inverse .navbar-nav .open .dropdown-menu .divider {
    background-color: #090909;
  }
  .navbar-inverse .navbar-nav .open .dropdown-menu > li > a {
    color: #999999;
  }
  .navbar-inverse .navbar-nav .open .dropdown-menu > li > a:hover, .navbar-inverse .navbar-nav .open .dropdown-menu > li > a:focus {
    color: white;
    background-color: transparent;
  }
  .navbar-inverse .navbar-nav .open .dropdown-menu > .active > a, .navbar-inverse .navbar-nav .open .dropdown-menu > .active > a:hover, .navbar-inverse .navbar-nav .open .dropdown-menu > .active > a:focus {
    color: white;
    background-color: #090909;
  }
  .navbar-inverse .navbar-nav .open .dropdown-menu > .disabled > a, .navbar-inverse .navbar-nav .open .dropdown-menu > .disabled > a:hover, .navbar-inverse .navbar-nav .open .dropdown-menu > .disabled > a:focus {
    color: #444444;
    background-color: transparent;
  }
}
.navbar-inverse .navbar-link {
  color: #999999;
}
.navbar-inverse .navbar-link:hover {
  color: white;
}
.navbar-inverse .btn-link {
  color: #999999;
}
.navbar-inverse .btn-link:hover, .navbar-inverse .btn-link:focus {
  color: white;
}
.navbar-inverse .btn-link[disabled]:hover, .navbar-inverse .btn-link[disabled]:focus, fieldset[disabled] .navbar-inverse .btn-link:hover, fieldset[disabled] .navbar-inverse .btn-link:focus {
  color: #444444;
}

.caret {
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 2px;
  vertical-align: middle;
  border-top: 5px solid;
  border-right: 5px solid transparent;
  border-left: 5px solid transparent;
}

.dropdown {
  position: relative;
}

.dropdown-toggle:focus {
  outline: 0;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 1000;
  display: none;
  float: left;
  min-width: 160px;
  padding: 5px 0;
  margin: 2px 0 0;
  list-style: none;
  font-size: 16px;
  text-align: left;
  background-color: white;
  border: 1px solid #cccccc;
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 4px;
  -webkit-box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
          box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
  background-clip: padding-box;
}
.dropdown-menu.pull-right {
  right: 0;
  left: auto;
}
.dropdown-menu .divider {
  height: 1px;
  margin: 10px 0;
  overflow: hidden;
  background-color: #e5e5e5;
}
.dropdown-menu > li > a {
  display: block;
  padding: 3px 20px;
  clear: both;
  font-weight: normal;
  line-height: 1.42857;
  color: #333333;
  white-space: nowrap;
}

.dropdown-menu > li > a:hover, .dropdown-menu > li > a:focus {
  text-decoration: none;
  color: #262626;
  background-color: whitesmoke;
}

.dropdown-menu > .active > a, .dropdown-menu > .active > a:hover, .dropdown-menu > .active > a:focus {
  color: white;
  text-decoration: none;
  outline: 0;
  background-color: #428bca;
}

.dropdown-menu > .disabled > a, .dropdown-menu > .disabled > a:hover, .dropdown-menu > .disabled > a:focus {
  color: #999999;
}

.dropdown-menu > .disabled > a:hover, .dropdown-menu > .disabled > a:focus {
  text-decoration: none;
  background-color: transparent;
  background-image: none;
  cursor: not-allowed;
}

.open > .dropdown-menu {
  display: block;
}
.open > a {
  outline: 0;
}

.dropdown-menu-right {
  left: auto;
  right: 0;
}

.dropdown-menu-left {
  left: 0;
  right: auto;
}

.dropdown-header {
  display: block;
  padding: 3px 20px;
  font-size: 14px;
  line-height: 1.42857;
  color: #999999;
  white-space: nowrap;
}

.dropdown-backdrop {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0;
  z-index: 990;
}

.pull-right > .dropdown-menu {
  right: 0;
  left: auto;
}

.dropup .caret,
.navbar-fixed-bottom .dropdown .caret {
  border-top: 0;
  border-bottom: 5px solid;
  content: "";
}
.dropup .dropdown-menu,
.navbar-fixed-bottom .dropdown .dropdown-menu {
  top: auto;
  bottom: 100%;
  margin-bottom: 1px;
}

@media (min-width: 768px) {
  .navbar-right .dropdown-menu {
    right: 0;
    left: auto;
  }
  .navbar-right .dropdown-menu-left {
    left: 0;
    right: auto;
  }
}

Can i use this css file instead of using the navwalker?? because the navwalker was working for a while now the drop down menus are not showing!