form {

width: 600px;

background: #ccc;

margin: 0 auto;

padding: 20px;

border: 1px solid black;

}

<form method="post" enctype="multipart/form-data">

<div>

<label for="file">With jpeg</label>

<input type="file" id="file" name="file" accept=".jpg, .jpeg, .png" multiple>

</div>

</form>

<form method="post" enctype="multipart/form-data">

<div>

<label for="file">Without jpeg</label>

<input type="file" id="file" name="file" accept=".jpg, .png" multiple>

</div>

</form>