Created announcements.html and added contents

widget_CtrlF/announcement_board/templates/announcements/announcements.html

+{% extends 'base.html' %}
+{% load static %}
+
+{% block page-title %} Widget's Announcement Board {% endblock %}
+
+{% block heading %} <h1> Welcome to Widget's Announcement Board! </h1> {% endblock %}
+
+{% block content %}
+<p> Announcements:<br>
+    {% for a in announcements_list %}
+        <a href="{% url 'announcements:detail' announcement.id %}">
+            {{a.title}} by {{ a.author.first_name }} {{ a.author.last_name }}
+        </a><br>
+    {% endfor %}
+</p>
+{% endblock %}
+
+{% block footing %}
+<p>
+    <a href="/announcements/add">
+        <button class="btn add">New Announcement</button>
+    </a>
+</p>
+
+<p>
+    <a href="/dashboard/" class="link">Dashboard</a><br>
+    <a href="/forum/" class="link">Forum</a><br>
+    <a href="/assignments/" class="link">Assignments</a><br>
+    <a href="/calendar/" class="link">Calendar</a>
+</p>
+{% endblock %}