sidenavbar.html文件正在覆盖content.html文件。如何并排显示。
INDEX.HTML
<Html>
<head>
<link rel="stylesheet" href="{{ url_for('static', filename='lftsd.css') }}">
</head>
<body>
{% block navbar %}
{% extends "sidenavbar.html" %}
{% endblock %}
{% block content %}
{% include "content.html" "%}
{% endblock%}
</body>
</Html>