JSFiddle - React, Tailwind, and code Playground

HTML

<form id="myForm">
    
      <div class="container">
      
        <div class="header">
          
          
          <h1>Order Form</h1>
       
        </div>
      
       <div class="label-container">
      
        <div class="label">          
          <br>
          <p><b>Customer Name</b></p>
          <p><b>Due Date</b></p>
          <p><b>Phone #</b></p>
        </div>

        <div class="inputBox">
          <br>
          <p><input type="text" name="myName"></p>
          <p><input type="text"></p>
          <p><input type="text"></p><br>
        </div>
     
        <div class="label2">
          <br>
          <p><b>Contact</b></p>
          <p><b>E-mail</b></p>
          <p><b>PO#</b></p>
        </div>

        <div class="inputBox2">
          <br>
          <p><input type="text"></p>
          <p><input type="text"></p>
          <p><input type="text"></p><br>
        </div>
   
       </div>

       <div class="contentBackground">
         
         <div class="uploadWrapper">
            
            <div class="fileUpload">
                
                <div class="uploadFile">
                    <p>Upload File: <span style="color:black"><input type="file" name="myFile" /></span></p>
                </div>

                <div class="content">
                    <p>Width(Inch) <input type="text" style="width: 100px"> Height(Inch) <input type="text" style="width: 100px"> Quantity <input type="text" style="width: 100px"></p>
                </div>
            
            </div>
         
         </div>
                        
         <div class="dropDown">
            <p>Material <select style="max-width: 10%;">
                    <option value="Paper">Paper</option>
                    <option value="Vinyl Banner">Vinyl Banner</option>
                    <option value="Adhesive Vinyl">Adhesive Vinyl</option>
                    <option value="Polygloss">Polygloss</option>
                    <option value="Translucent...

CSS

<style type="text/css"> 
  * {
        margin: 0
    }
    .container {
        width: 1250px
    }
    .header {
        background-color: #8000FF;
        margin:auto;
        width: 50%;
        border:3px solid #41087B;
        padding: 10px;
    }
    .header img {
        float:left;
        padding: 5px;
    }
    .header h1 {
        color: white;
        line-height: 80px;
        text-align:center
    }
    .label {
       float: left;
        padding: 5px;
        color: red;
    }
    .label-container {
        width: 570px;
        margin: 0 auto;
        text-align:center;
        margin: auto
        
    }
    .label p {
       
        padding: 2px;
    }
    .inputBox {
        float:left;
        text-align: center;
    }
    .inputBox p {
        text-align: center;
        padding: 1px
    }
    .label2 {
        
        float:left;
        padding:5px;
        color: red
    }
    .label2 p {
        padding:2px
    }
    .inputBox2 {
        float:left;
    }
    .inputBox2 p {
        padding: 1px
    }
    .contentBackground {
        background-color:#D8D8D8;
        clear:left;
        width: 60%;
        margin: auto;
        height: 200px
             display: block;
    }
    .uploadFile p {
        text-align: center;
        padding: 20px;
        color:red
    }
    .content p {
        text-align: center;
        color:red;
        padding: 7px
    }
    .dropDown p {
        text-align: center;
        padding: 40px;
        margin-left: 8px;
        height:
    }
    .moreFiles {
        text-align:center
    }
    .textBox {
        text-align: center
    }
    .textBox p {
        text-align:center;
        padding: 5px
    }
    .button {
        text-align: center
    }
    </style>

JavaScript

function doGet(e) {
  return HtmlService.createHtmlOutputFromFile('HTML')     
}

function uploadFiles(form) {
  
  try {
    
    var dropbox = "Customer Files";
    var folder, folders = DriveApp.getFoldersByName(dropbox);
    
    if (folders.hasNext()) {
      folder = folders.next();
    } else {
      folder = DriveApp.createFolder(dropbox);
    }
    
    var blob = form.myFile;    
    var file = folder.createFile(blob);    
    file.setDescription("Uploaded by " + form.myName);
        
    return "File uploaded successfully " + file.getUrl();
    
  } catch (error) {
    
    return error.toString();
  }
  
}