问输入类型的宽度为100%，并位于父div内。

EN

<div  id="login-form">
<form>
    <input type="email" placeholder="Email" id="email" name="email_phone">
    <br>
    <input type="password" placeholder="Password" id="password" name="password">
    <br>
    <button id="login-submit">Submit</button>
    <br>
    <button id="login-forgot">Forgot Password</button>
</form>
<br>
<br>
<center>
    <p>Don't have an account?</p>
</center>
<button id="create-new-account">Create Account Now</button>
</div>

#login-form input[type=email], #login-form input[type=password] {
    width: 100%;
    font-size: 14pt;
    border: none;
    outline: none;
    padding: 10px;
}

#login-form button {
    width: 100%;
    border: none;
    color: white;
    font-size: 14pt;
    padding: 10px;
    margin-top: 10px;
    border-radius: 4px;
    cursor: pointer;
}