为什么我的 html/CSS 网格在网格中不起作用？-PHP中文网问答

我试图在另一个网格中的一个网格中创建一个输入表单，但它不起作用。我已经多次查找如何制作 css 网格，但我不知道我做错了什么。整个页面卡在第一个网格框中。我想知道我是否正确使用了正确的位置来实现网格，或者是否可能是我如何将网格类/id 放入

我是 html/ CSS 新手，所以如果有其他问题请告诉我。（除了当我复制粘贴时缩进被搞乱之外，我试图修复它）

<!Doctype html>
 <lang="en">
  <head>
   <meta charset="utf-8">
   <title>Form</title>
   <style>
    #grid {
           display: grid;
           grid-template-columns: 160px auto auto auto;
           grid-template-rows: 150px auto 100px;
       grid-template-areas:
       "h h h h"
       "n g g g"
       "f f f f";
       }
    #ingrid {
       grid-area: g;
           display: grid;
           grid-template-columns: auto auto auto;
           grid-template-rows: auto;
       grid-template-areas:
       "l m r";
       }
    #header {
       grid-area: h;
           background-color: #DBA3EE;
       color: #FFF; 
           line-height: 250%; 
       font-family: Arial, Verdana, sans-serif; 
       font-weight: bold;
           font-size: 72px;
       text-indent:20px;
       }
    #nav {
           grid-area: n;
           background-color: #15394F;
       color: #FFF; 
       font-family: Arial, Verdana, sans-serif; 
       font-weight: bold;
           font-size: 25px;
       text-indent:2px;
       padding: 8px;
       }
   .form {
        grid-area: g;
    padding:5px;
    margin-top: 20px;
    margin-bottom: 20px;
    border: 2px solid #000;
    }
   .inform {
        grid-area: l;
    grid-area: m;
    grid-area: r;
        }
   .midform {
        grid-area: m;
        }
   .rightform {
        grid-area: r;
        }
   .leftform {
        grid-area: l;
        }
   </style>
  </head>
  <body id="grid">
   <div id="header">HEADER</div>
   <div id="nav">Home<br>Main<br>Form<br></div>
   
    <form class="form">
     
     <div class="inform">
      <div class="midform">How would you like to be contact? <br>
       <input type="radio" name="contact" value="email" checked="checked"> email <br>
       <input type="radio" name="contact" value="phone" > phone <br></div>
          <div class="midform">Which course(s) are you registering? <br>
           <input type="checkbox" name="course" value="ACS-1805" >ACS-1805<br>
           <input type="checkbox" name="course" value="ACS-1809" >ACS-1809<br>
           <input type="checkbox" name="course" value="ACS-1903" >ACS-1903<br></div>
       
      <div class="midform">Payment Method: <input list="paymenttype" name="paymenttype"><br>
       <datalist id="paymenttype">
        <option value="Debit">
        <option value="MasterCard">
        <option value="VISA">
       </datalist></div>
     </div>
     
     <div class="inform">
      <div class="midform">Special Request<br>
       <textarea name="comments" id="sptextarea"></textarea><br></div>
       
      <div class="leftform">
       <div>Rate Your Previous</div>
       <div>Experience (with 10 is</div>
       <div>the best): </div>
      </div>
      
       <div class="midform">
        <div>0<input type="range" min="1" max="10" step="1" value="5">10<br>
        </div>
       </div>
      
           <div class="midform"><button type="submit">Submit</button>
           <button type="reset">Reset</button></div>
      </div>
    </form>
  </body>
</html>

#grid { display: grid; grid-template-columns: 160px auto auto auto; grid-template-rows: 150px auto 100px; grid-template-areas: "h h h h" "n g g g" "f f f f"; } #ingrid { grid-area: g; display: grid; grid-template-columns: auto auto auto; grid-template-rows: auto; grid-template-areas: "l m r"; } #header { grid-area: h; background-color: #DBA3EE; color: #FFF; line-height: 250%; font-family: Arial, Verdana, sans-serif; font-weight: bold; font-size: 72px; text-indent: 20px; } #nav { grid-area: n; background-color: #15394F; color: #FFF; font-family: Arial, Verdana, sans-serif; font-weight: bold; font-size: 25px; text-indent: 2px; padding: 8px; } .form { grid-area: g; padding: 5px; border: 2px solid #000; } .inform { grid-area: l; grid-area: m; grid-area: r; } .midform { grid-area: m; } .rightform { grid-area: r; } .leftform { grid-area: l; }

Home
Main
Form