Example of .form-group
<form>
<div class=”form-group”>
<label for=”exampleInputEmail1”>Email
address</label>
<input type=”email” class=”form-control” id=”exampleInputEmail1” ariadescribedby=”emailHelp” placeholder=”Provide email”>
</div>
<div class=”form-group”>
<label for=”exampleInputPassword1”>Your password</label>
<input type=”password” class=”form-control” id=”exampleInputPassword1”
placeholder=”Password”>
</div>
<div class=”form-group form-check”>
<input type=”checkbox” class=”form-check-input” id=”exampleCheck1”>
<label class=”form-check-label” for=”exampleCheck1”>Remember me</label>
</div>
<button type=”submit” class=”btn btn-primary”>Submit</button>
</form>
.form-control
Use this class to style all textual form controls such as user input, titles, etc.
<form>
<div class=”form-group”>
<label for=”exampleFormControlInput1”>Email address</label>
<input type=”email” class=”form-control” id=”exampleFormControlInput1”
placeholder=”name@example.com”>
</div>
.form-control-file
Add this class whenever you need to provide the user with an option to upload a file to the form.
<input type=”file” class=”form-control-file” id=”exampleFormControlFile1”>
.form-control-lg and .form-control-sm.
Create a visual hierarchy within your form by adding .form-control-lg to make bigger input areas and .form-control-sm to
make smaller ones.
<input class=”form-control form-control-lg” type=”text” placeholder=”.form-controllg”>
<input class=”form-control form-control-sm” type=”text” placeholder=”.form-controlsm”>