The button tag doesn't change?

Question

css

When I make forms and below forms button is created by button tag and all forms and buttons are in forms tag. But when I work in CSS, my button does not change, even though the class is clearly defined! How can I solve the problem?
HTML:

<form action="#" class="form">
    <input class="name" type="text" name="name" placeholder="Имя" required>
     <input class="number" type="phone" name="tel" placeholder="Телефон" required>
     <input class="mail" type="email" name="e_mail" placeholder="E-mail" required>
     <input class="request" type="text" name="request" placeholder="Просьба и условия" required>
     <button class"btnform" type="submit">Отправить</button>
  </form>

CSS:

.btnform {
  font-family: 'Open Sans', sans-serif;
      color: #ededed;
      display: block;
      border-radius: 5px;
      width: 300px;
      text-align: center;
      text-decoration: none;
}

Answer 1

class"btnform" in html no equal sign