add default theme

resources/admin_themes/default/css/bootstrap/_media.css

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+.media {
+  display: -webkit-box;
+  display: -ms-flexbox;
+  display: flex;
+  -webkit-box-align: start;
+  -ms-flex-align: start;
+  align-items: flex-start; }
+
+.media-body {
+  -webkit-box-flex: 1;
+  -ms-flex: 1;
+  flex: 1; }

resources/admin_themes/default/css/bootstrap/utilities/_stretched-link.css

@@ -0,0 +1,10 @@
+.stretched-link::after {
+  position: absolute;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  z-index: 1;
+  pointer-events: auto;
+  content: "";
+  background-color: rgba(0, 0, 0, 0); }

resources/admin_themes/default/css/style.css

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+body {
+  font-family: "Poppins", Arial, sans-serif;
+  font-size: 14px;
+  line-height: 1.8;
+  font-weight: normal;
+  background: #fafafa;
+  color: gray; }
+
+a {
+  -webkit-transition: .3s all ease;
+  -o-transition: .3s all ease;
+  transition: .3s all ease;
+  color: #f8b739; }
+  a:hover, a:focus {
+    text-decoration: none !important;
+    outline: none !important;
+    -webkit-box-shadow: none;
+    box-shadow: none; }
+
+button {
+  -webkit-transition: .3s all ease;
+  -o-transition: .3s all ease;
+  transition: .3s all ease; }
+  button:hover, button:focus {
+    text-decoration: none !important;
+    outline: none !important;
+    -webkit-box-shadow: none !important;
+    box-shadow: none !important; }
+
+h1, h2, h3, h4, h5,
+.h1, .h2, .h3, .h4, .h5 {
+  line-height: 1.5;
+  font-weight: 400;
+  font-family: "Poppins", Arial, sans-serif;
+  color: #000; }
+
+.ftco-section {
+  padding: 7em 0; }
+
+.ftco-no-pt {
+  padding-top: 0; }
+
+.ftco-no-pb {
+  padding-bottom: 0; }
+
+.heading-section {
+  font-size: 28px;
+  color: #000; }
+  .heading-section small {
+    font-size: 18px; }
+
+.img {
+  background-size: cover;
+  background-repeat: no-repeat;
+  background-position: center center; }
+
+.navbar {
+  padding: 15px 10px;
+  background: #fff;
+  border: none;
+  border-radius: 0;
+  margin-bottom: 40px;
+  -webkit-box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
+  box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1); }
+
+.navbar-btn {
+  -webkit-box-shadow: none;
+  box-shadow: none;
+  outline: none !important;
+  border: none; }
+
+.line {
+  width: 100%;
+  height: 1px;
+  border-bottom: 1px dashed #ddd;
+  margin: 40px 0; }
+
+.wrapper {
+  width: 100%; }
+
+#sidebar {
+  min-width: 300px;
+  max-width: 300px;
+  background: #1d1919;
+  color: #fff;
+  -webkit-transition: all 0.3s;
+  -o-transition: all 0.3s;
+  transition: all 0.3s; }
+  #sidebar.active {
+    margin-left: -300px; }
+  #sidebar .logo {
+    display: block;
+    width: 120px;
+    height: 120px;
+    margin: 0 auto; }
+    #sidebar .logo span {
+      display: block; }
+  #sidebar ul.components {
+    padding: 0; }
+  #sidebar ul li {
+    font-size: 16px; }
+    #sidebar ul li > ul {
+      margin-left: 10px; }
+      #sidebar ul li > ul li {
+        font-size: 14px; }
+    #sidebar ul li a {
+      padding: 10px 0;
+      display: block;
+      color: rgba(255, 255, 255, 0.8);
+      border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
+      #sidebar ul li a:hover {
+        color: #f8b739; }
+    #sidebar ul li.active > a {
+      background: transparent;
+      color: #f8b739; }
+  @media (max-width: 991.98px) {
+    #sidebar {
+      margin-left: -300px; }
+      #sidebar.active {
+        margin-left: 0; } }
+
+a[data-toggle="collapse"] {
+  position: relative; }
+
+.dropdown-toggle::after {
+  display: block;
+  position: absolute;
+  top: 50%;
+  right: 0;
+  -webkit-transform: translateY(-50%);
+  -ms-transform: translateY(-50%);
+  transform: translateY(-50%); }
+
+@media (max-width: 991.98px) {
+  #sidebarCollapse span {
+    display: none; } }
+
+#content {
+  width: 100%;
+  padding: 0;
+  min-height: 100vh;
+  -webkit-transition: all 0.3s;
+  -o-transition: all 0.3s;
+  transition: all 0.3s; }
+
+.btn.btn-primary {
+  background: #465df6;
+  border-color: #111111; }
+  .btn.btn-primary:hover, .btn.btn-primary:focus {
+    background: #f8b739 !important;
+    border-color: #f8b739 !important; }
+
+.footer p {
+  color: rgba(255, 255, 255, 0.5); }