how to create simple form using html service in gmail addon,i have struggle create forms, The below code i have tried,
login.html:
<!DOCTYPE html>
<html>
<head>
<base target="_top">
</head>
<body>
<div class="gray-bg" style="min-height:100vh">
<div class="middle-box text-center loginscreen animated fadeInDown" style="padding-top:20%">
<div>
<p>Login in. To see it in action.</p>
<form name="login_form" class="m-t" role="form" >
<div class="input-group m-b">
<span class="input-group-addon">
<i class="fa fa-home"></i>
</span>
<input type="number" class="form-control" name="clientId" placeholder="Id" required>
</div>
<div class="input-group m-b">
<span class="input-group-addon">
<i class="fa fa-user"></i>
</span>
<input type="text" class="form-control" name="username" placeholder="Username" required>
</div>
<div class="input-group m-b">
<span class="input-group-addon">
<i class="fa fa-lock"></i>
</span>
<input type="password" class="form-control" name="password" placeholder="Password" required>
</div>
<button type="submit" class="btn btn-primary block full-width m-b">
Sign In
</button>
</form>
</div>
</div>
</div>
</body>
</html>
code.gs
var html_from_file = HtmlService.createTemplateFromFile('login').evaluate().getContent();
return CardService.newCardBuilder()
.setHeader(CardService.newCardHeader().setTitle('Login'))
.addSection(CardService.newCardSection().addWidget(CardService.newKeyValue().setContent(html_from_file)))
.build();
How to build the forms in gmail addon ??
Thanks in advance