added PostViewer component

packages/app/src/components/PostViewer/index.jsx

@@ -0,0 +1,14 @@
+import React from "react"
+import { PostCard, CommentsCard } from "components"
+
+import "./index.less"
+
+export default (props) => {
+    const { post } = props
+
+    return <div className="post_viewer">
+        <PostCard
+            data={post}
+        />
+    </div>
+}

packages/app/src/components/PostViewer/index.less

@@ -0,0 +1,20 @@
+.post_viewer {
+    position: absolute;
+
+    z-index: 50;
+
+    top: 0;
+    left: 0;
+
+    display: flex;
+    flex-direction: row;
+
+    align-items: center;
+    justify-content: center;
+
+    width: 100vw;
+    height: 100vh;
+
+    background-color: rgba(var(--layoutBackgroundColor), 0.6);
+    backdrop-filter: blur(10px);
+}