fix: 修复部分问题

src/heurams/interface/css/screens/preparation.tcss

@@ -0,0 +1,24 @@
+#operations {
+    height: auto;
+}
+
+.btn {
+    margin: 0 1 0 0;
+    padding: 0 1 0 1;
+}
+
+#main_container {
+
+}
+
+#previewer_container {
+
+}
+
+.unit-statline {
+
+}
+
+#title {
+    padding: 0;
+}