<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<h2 class="text-center">假圖產生器</h2>
<div class="col-md-8 col-md-offset-2">
<div class="col-md-6">
<form onsubmit="return false;">
<div class="form-group">
<lable>文字大小</lable>
<input id="txtsize" class="form-control" value="18" type="number">
</div>
<div class="form-group">
<lable>假圖文字</lable>
<input id="txt" class="form-control" value="測試文字123">
</div>
<div class="form-group">
<lable>假圖寬度</lable>
<input id="w" class="form-control" value="400" type="number">
</div>
<div class="form-group">
<lable>假圖高度</lable>
<input id="h" class="form-control" value="300" type="number">
</div>
<div class="form-group">
<button class="btn btn-default">產生</button>
</div>
</form>
</div>
<div class="col-md-6">
<img src="https://placeholdit.imgix.net/~text?txtsize=18&txt=測試文字123&w=400&h=300" class="img-responsive" id="img_text">
</div>
</div>
</div>
