first commit

media/com_media/scss/components/_media-modal.scss

@@ -0,0 +1,97 @@
+.media-modal-backdrop {
+  position: fixed;
+  top: 0;
+  left: 0;
+  z-index: 1049;
+  display: table;
+  width: 100%;
+  height: 100%;
+  background-color: $modal-backdrop-color;
+
+  .modal {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    animation: .5s ease 0s normal none 1 running fadeIn;
+  }
+
+  .modal-body {
+    width: auto;
+    padding: 15px;
+  }
+
+  .modal-content {
+    box-shadow: $modal-box-shadow;
+  }
+
+}
+
+.media-preview-modal {
+  color: $modal-preview-text-color;
+
+  .modal {
+    display: grid !important;
+    align-items: center !important;
+    justify-content: center !important;
+  }
+
+  .modal-content {
+    display: flex;
+    flex-direction: column;
+    align-items: flex-start;
+    background-color: transparent;
+    border: 0;
+    box-shadow: none;
+  }
+  .modal-header {
+    padding: 0;
+    border: 0;
+  }
+  .modal-body {
+    padding: 0;
+    background-color: #fff;
+    box-shadow: $modal-box-shadow;
+    img {
+      max-width: 100%;
+    }
+  }
+  .modal-footer {
+    display: none;
+  }
+}
+
+.media-preview-close {
+  position: absolute;
+  top: -2rem;
+  right: 0;
+  font-size: 2rem;
+  color: inherit;
+  background: none;
+  border: 0;
+  opacity: .7;
+  &:hover {
+    cursor: pointer;
+    opacity: 1;
+  }
+}
+
+@media (min-width: 576px) {
+  .media-preview-modal {
+    .modal-dialog {
+      max-width: unset !important;
+    }
+  }
+}
+
+@keyframes fadeInUp {
+  from {
+    opacity: 0;
+    transition: transform .3s ease-out;
+    transform: translate(0, -25%);
+  }
+
+  to {
+    opacity: 1;
+    transform: none;
+  }
+}