[完善] 预案辅助页面布局

src/app/ui/plan-assistance/plan-assistance.component.html

@@ -1 +1,11 @@
-<app-working-area #workingArea></app-working-area>
+<div class="content">
+    <div class="left">
+
+    </div>
+
+    <!-- canvas -->
+    <div class="center">
+        <app-working-area #workingArea></app-working-area>
+    </div>
+    <!-- canvas -->
+</div>

src/app/ui/plan-assistance/plan-assistance.component.scss

@@ -0,0 +1,20 @@
+.content {
+    width: 100%;
+    height: 100%;
+    box-sizing: border-box;
+    padding: 1px;
+    overflow: hidden;
+    display: flex;
+}
+
+//左侧菜单
+.left {
+    width: 300px;
+    height: 100%;
+    background-color: #000;
+}
+
+//右侧工作区
+.center {
+    flex: 1;
+}