AngularJS final project...nothing shows in the browser

Projects
1

index.html

<body ng-app="SuggestionBox" ng-controller="HomeController" ng-repeat="post in posts">;

<h1>{{helloWorld}}</h1>;

<p>
<span class="glyphicon glyphicon-plus-sign" ng-click="upVote(post)></span> Upvotes: {{post.upvotes}}
</p>;

<form ng-submit="addSuggestion()" style="margin-top: 50px">;
<h3> Submit Your Suggestion </h3>;
<div class="form-group">;
<input type="text" class="form-control" placeholder="Great ideas here" ng-model="title"></input>;
</div>;
<button type="submit" class="btn btn-primary">Suggest</button>;
</form>;

<!-- Modules -->
<script type="text/javascript" src="js/app.js"></script>;

<!-- Controllers -->
<script type="text/javascript" src="js/controllers/HomeController.js"></script>;

<!-- Services -->
<script type="text/javascript" src="js/services/suggestions.js"></script>;

</body>;

suggestions.js

app.factory('suggestions', [function() {
    var demoSuggestions = {
        posts: [
            {
            title: 'Free pizza at club meetings',
            upvotes: 15,
            comments: [],
            },
            {
            title: 'End all club emails with Laffy Taffy jokes',
            upvotes: 9,
            comments: [],
            },
            {
            title: 'Retrofit water fountain with Gatorade',
            upvotes: 7,
            comments: [],
            },
            {
            title: 'Sing Bon Jovi\'s "Living on a Prayer" halfway through meetings',
            upvotes: 3,
            comments: [],
            },
        ]
    };
    return demoSuggestions;  
}]);

app.js

var app = angular.module('SuggestionBox', []);

HomeController

app.controller('HomeController', ['$scope', 'suggestions', function($scope) {
    $scope.helloWorld = "Suggestions Box";
    $scope.posts = "suggestions.posts";
    $scope.addSuggestion = function() {

        //if input empty, don't submit
        if(!$scope.title || $scope.title === "") {
        return;
        }
         
        //push suggestion posts in suggestions.js
        $scope.posts.push({
        title: $scope.title,
        upvotes: 0,
        });
         
        //after submit, clear input
        $scope.title = '';
        };
}]);

can anyone please tell me where did I do wrong?