<form><div class="row mb-4"><div class="col"><input type="text" class="form-control" placeholder="First name"></div><div class="col"><input type="text" class="form-control" placeholder="Last name"></div></div><input type="submit" name="time" class="btn btn-primary"></form>

<form><div class="form-row mb-4"><div class="col"><input type="text" class="form-control" placeholder="First name"></div><div class="col"><input type="text" class="form-control" placeholder="Last name"></div></div><input type="submit" name="time" class="mb-4 btn btn-primary"></form>

<form><div class="form-group mb-4"><label for="formGroupExampleInput">Example label</label><input type="text" class="form-control" id="formGroupExampleInput" placeholder="Example input"></div><div class="form-group mb-4"><label for="formGroupExampleInput2">Another label</label><input type="text" class="form-control" id="formGroupExampleInput2" placeholder="Another input"></div><input type="submit" name="time" class="btn btn-primary"></form>

<form><div class="form-row mb-4"><div class="col-7"><input type="text" class="form-control" placeholder="City"></div><div class="col"><input type="text" class="form-control" placeholder="State"></div><div class="col"><input type="text" class="form-control" placeholder="Zip"></div></div><input type="submit" name="time" class="mb-4 btn btn-primary"></form>

<div class="form-group"><p>Wrap the <code>small</code>tag inside the <code>span</code>tag with <code>.badge</code></p><label for="h-text4" class="sr-only">Email address</label><input type="text" class="form-control" id="h-text4" aria-describedby="h-text4" placeholder=""><div class=" mt-1"><span class="badge badge-primary"><small id="sh-text4" class="form-text mt-0">I am the helper text.</small></span></div></div>

<div class="form-group"><p>Use <code>.w-100</code>class to the <code>span</code>tag to make block.</p><label for="h-text7" class="sr-only">Email address</label><input type="text" class="form-control" id="h-text7" aria-describedby="h-text7" placeholder=""><div class="mt-1"><span class="badge badge-primary w-100"><small id="sh-text7" class="form-text mt-0 text-left">I am the helper text.</small></span></div></div>

<form class="form-inline mb-4"><div class="form-group  d-block text-left"><label for="inputPassword6" class="d-block">Password</label><input type="password" id="inputPassword6" class=" form-control mt-2" aria-describedby="passwordHelpInline"><small id="passwordHelpInline" class="text-muted">Min 8-20 char </small></div></form><input type="submit" name="time" class="btn btn-primary">

<!-- Large Input --><div class="form-group"><label for="exampleFormControlInput1">Large Input</label><input class="form-control form-control-lg" type="text" placeholder=".form-control-lg"></div><!-- Default Input --><div class="form-group"><label for="exampleFormControlInput1">Default Input</label><input class="form-control" type="text" placeholder="Default input"></div><!-- Small Input --><div class="form-group"><label for="exampleFormControlInput1">Small Input</label><input class="form-control form-control-sm" type="text" placeholder=".form-control-sm"></div>

<!-- Large Input --><select class="form-control form-control-lg"><option>Large select</option><option>One</option><option>Two</option><option>Three</option></select><!-- Default Input --><select class="form-control"><option>Default select</option><option>One</option><option>Two</option><option>Three</option></select><!-- Small Input --><select class="form-control form-control-sm"><option>Small select</option><option>One</option><option>Two</option><option>Three</option></select>

<div class="form-group row  mb-4"><label for="colFormLabelSm" class="col-sm-2 col-form-label col-form-label-sm">Email</label><div class="col-sm-10"><input type="email" class="form-control form-control-sm" id="colFormLabelSm" placeholder="col-form-label-sm"></div></div><div class="form-group row mb-4"><label for="colFormLabel" class="col-sm-2 col-form-label">Email</label><div class="col-sm-10"><input type="email" class="form-control" id="colFormLabel" placeholder="col-form-label"></div></div><div class="form-group row mb-4"><label for="colFormLabelLg" class="col-sm-2 col-form-label col-form-label-lg">Email</label><div class="col-sm-10"><input type="email" class="form-control form-control-lg" id="colFormLabelLg" placeholder="col-form-label-lg"></div></div>

<div class="custom-file mb-4"><input type="file" class="custom-file-input" id="customFile"><label class="custom-file-label" for="customFile">Choose file</label></div>

<form>
    <fieldset disabled>
        <div class="form-group mb-4">
            <label for="disabledTextInput">Disabled input</label>
            <input type="text" id="disabledTextInput" class="form-control" placeholder="Disabled input">
        </div>
        <div class="form-group mb-4">
            <label for="disabledSelect">Disabled select menu</label>
            <select id="disabledSelect" class="form-control">
                <option>Disabled select</option>
            </select>
        </div>
        <div class="form-check mt-5 mb-3 pl-0">
            <div class="custom-control custom-checkbox mb-4">
                <input type="checkbox" class="custom-control-input" id="disabledFieldsetCheck">
                <label class="custom-control-label" for="disabledFieldsetCheck">Can't check this</label></div></div><button type="submit" class="btn btn-primary mt-0">Submit</button></fieldset></form>