add transition, add plane container

src/components/mainPart/orLineContainer.tsx

@@ -0,0 +1,7 @@
+import React from "react";
+
+export const OrLineContainer:React.FC = () => <div className="main-part-content-or-line-container">
+    <span className="main-part-content-or-line"></span>
+    <span className="main-part-content-or-line-text">или</span>
+    <span className="main-part-content-or-line"></span>
+</div>;