我的javascript网页有一些问题。我的第一个问题是如何创建环绕标题的小边框？我教授的示例网页的底部如下所示：https://i.imgur.com/4DVozv9.png
到目前为止，我网页的底部看起来像这样：https://i.imgur.com/8STmOGd.png
我不知道如何在“送货方式”，“送货地址”和“付款明细”标题周围打上一个小边框。
也是出于某种原因，出于某种原因，我的“完成付款”按钮上的“”标签未将我的按钮放在下一行。到目前为止，这是我的代码，请注意，尽管它尚不完整，所以我的功能和其他功能尚未准备就绪，现在我仅专注于演示。谢谢您的时间。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>YOUR NAME Final Project Checkout</title>
<link href="layout.css" type="text/css" rel="stylesheet">
<script type="text/javascript" src="guest-functions.js"></script>
<script type="text/javascript" src="cart-functions.js"></script>
<script>
window.onload=function(){
setGuest();
updateCartTotal();
}
</script>
</head>
<body>
<header><img src="90s-Gamers-Logo.png" width="798" height="82" alt="My Company"/></header>
<nav>
<form id="form1" name="form1" method="post">
<p>Choose a page to visit:<br>
<select name="select" id="select" onchange="location = this.options[this.selectedIndex].value;">
<option value="index.html">Home</option>
<option value="shop.html">Shop</option>
<option value="cart.html">Cart</option>
<option value="checkout.html" selected="selected">Checkout</option>
</select>
</p><br>
<p><b>Welcome Guest!</b></p>
<p>Enter your name:</p>
<input id="sign-in-text"><br>
<button onclick="setGuest()" id="sign-in-button">Sign-In</button><br><br>
<p>Your shopping cart is now</p>
<!--Need variable here-->
<p><b>empty!</b></p>
</form>
<p> </p>
<div id="divGuestArea"> </div>
<p> </p>
<div id="divCartSummary"> </div>
</nav>
<div id="main">
<h1>Checkout</h1>
<!--<p>This is where the transaction would take place so create a form here to take care of that final process as appropriate. Such form fields as contact info, shipping method, payment method, receipt, etc. Use HTML attributes wisely to help with validation and write JavaScript to validate any needed fields that are not sure to be validated by this HTML.</p>
<p>Connect your form to a "thankyou.html" page that you create so that after the form is submitted and found to be filled out properly, you thank them by name on "thankyou.html".</p>-->
<table border="1" cellspacing="0" cellpadding="6" summary="Table of Quantity, Description, Price, and Product Totals">
<tbody>
<tr>
<td><b>Quantity</b></td>
<td><b>Description</b></td>
<td><b>Price</b></td>
<td><b>Product Total</b></td>
</tr>
<tr style="text-align:right">
<td>later</td>
<td>later</td>
<td>later</td>
<td>later</td>
</tr>
<tr style="text-align:right">
<td>later</td>
<td>later</td>
<td>later</td>
<td>later</td>
</tr>
<tr style="text-align:right">
<td colspan="3">Subtotal:</td>
<td>later</td>
</tr>
<tr style="text-align:right">
<td colspan="3">Tax:</td>
<td>later</td>
</tr>
<tr style="text-align:right">
<td colspan="3"><b>Grand total:</b></td>
<td><b>later</b></td>
</tr>
</tbody>
</table><br>
<p>Display total amount</p>
<p>Shipping Method</p>
<p> <input type="radio" name="ShipType" id="standard" value="2">
<label for="standard">Standard Shipping ($2)</label>
<input type="radio" name="ShipType" id="2-day" value="5">
<label for="2-day">2-Day Shipping ($5)</label>
<input type="radio" name="ShipType" id="overnight" value="10">
<label for="overnight">Overnight Shipping ($10)</label>
<br>
<p>Shipping Address</p>
Full Name:
<input type="text" id="FullName" name="FullName">
Street Address:
<input type="text" id="StreetAddress" name="StreetAddress"><br><br>
City:
<input type="text" id="City" name="City">
State/Province/Region:
<input type="text" id="State" name="State"><br><br>
ZIP:
<input type="text" id="Zip" name="Zip">
Country:
<input type="text" id="Country" name="Country"><br><br>
Phone Number:
<input type="text" id="PhoneNumber" name="PhoneNumber"><br>
<p>Payment Details</p>
<select id="selPayment" name="selPayment" onChange="getSelectValue();">
<option value="" selected="selected">- Choose one -</option>
<option value="Visa">Visa Credit</option>
<option value="MasterCard">MasterCard Credit</option>
<option value="American Express">American Express Credit</option>
<option value="Debit Card">Debit Card</option>
<option value="Pay Pal">Paypal</option>
</select> <br><br>
Card #:
<input type="text" id="CardNumber" name="CardNumber"><br><br>
Expiration Month:
<select id="selMonth" name="selMonth" onChange="getSelectMonth();">
<option value="" selected="selected">- Choose one -</option>
<option value="January">January</option>
<option value="February">Febraury</option>
<option value="March">March</option>
<option value="April">April</option>
<option value="May">May</option>
<option value="June">June</option>
<option value="July">July</option>
<option value="August">August</option>
<option value="September">September</option>
<option value="October">October</option>
<option value="November">November</option>
<option value="December">December</option>
</select> <br><br>
Expiration Year:
<select id="selYear" name="selYear" onChange="getSelectYear();">
<option value="" selected="selected">- Choose one -</option>
<option value="2020">2020</option>
<option value="2021">2021</option>
<option value="2022">2022</option>
<option value="2023">2023</option>
<option value="2024">2024</option>
<br><p>
<input type="button" value="Complete Payment"
onclick="storeAndGo();">
</p>
<footer>
Copyright 2020, 90's Gamers.
</footer>
</div>
</body>
</html>
您可以在3个部分中添加div，并且可以为此设置边框。
我不知道如何在“送货方式”，“送货地址”和“付款明细”标题周围打上一个小边框。
CSS
border: 1px solid;
border-radius: 25px;