ㄧ.Forms:表單元素
<body data-spy="scroll" data-target="#nav-demo">
<div class="component" id="demo" style="height: 300vh">
<label for="email">郵件地址</label>
<input type="text" class="form-control" placeholder="Email" id="email">
<small class="form-text text-muted">請輸入正確的電子郵件地址,接收重要的通知。</small>
</div>
</body>
.demo.component{
padding: 50px;
}
重點: