Form Development by using Bootstrap elements:

<form>
<!-- EMAIL SUBMISSION -->
<div class="form-group"> <label for="exampleInputEmail1">Email address</label> <input type="email" class="form-control" id="exampleInputEmail1" aria-describedby="emailHelp" placeholder="Enter email"> <small id="emailHelp" class="form-text text-muted">We'll never share your email with anyone else.</small> </div>

<!-- PASSWORD -->
<div class="form-group"> <label for="exampleInputPassword1">Password</label> <input type="password" class="form-control" id="exampleInputPassword1" placeholder="Password"> </div>

<!-- DROPDOWN SELECT -->
<div class="form-group"> <label for="exampleSelect1">Example select</label> <select class="form-control" id="exampleSelect1"> <option>1</option> <option>2</option> <option>3</option> <option>4</option> <option>5</option> </select> </div>

<!-- MULTIPLE SELECT OPTIONS -->
<div class="form-group"> <label for="exampleSelect2">Example multiple select</label> <select multiple class="form-control" id="exampleSelect2"> <option>1</option> <option>2</option> <option>3</option> <option>4</option> <option>5</option> </select> </div>

<!-- TEXT AREA -->
<div class="form-group"> <label for="exampleTextarea">Example textarea</label> <textarea class="form-control" id="exampleTextarea" rows="3"></textarea> </div>

<!-- FILE UPLOAD INPUT -->
<div class="form-group"> <label for="exampleInputFile">File input</label> <input type="file" class="form-control-file" id="exampleInputFile" aria-describedby="fileHelp"> <small id="fileHelp" class="form-text text-muted">This is some placeholder block-level help text for the above input. It's a bit lighter and easily wraps to a new line.</small> </div>

<!-- RADIO BUTTONS -->
<fieldset class="form-group"> <legend>Radio buttons</legend> <div class="form-check"> <label class="form-check-label"> <input type="radio" class="form-check-input" name="optionsRadios" id="optionsRadios1" value="option1" checked> Option one is this and that&mdash;be sure to include why it's great </label> </div>

<div class="form-check"> <label class="form-check-label"> <input type="radio" class="form-check-input" name="optionsRadios" id="optionsRadios2" value="option2"> Option two can be something else and selecting it will deselect option one
</label> </div>
<div class="form-check disabled"> <label class="form-check-label"> <input type="radio" class="form-check-input" name="optionsRadios" id="optionsRadios3" value="option3" disabled> Option three is disabled </label> </div>
</fieldset>

<!-- CHECK BUTTON -->
<div class="form-check"> <label class="form-check-label"> <input type="checkbox" class="form-check-input"> Check me out </label> </div>
<button type="submit" class="btn btn-primary">Submit</button>
</form>
Note: The <fieldset> tag is used to group related elements in a form.