Форма в блюре

blur.css

#form3{
  top: 0;
  padding: 25px 35px;
}
label {
  width: 100%;
}
label input{
  width: 100%;
  height: 45px;
  color: #000;
}
#form3 label{
  margin-bottom: 30px;
}
#form3 textarea{
  height: 100px;
  margin-top: 20px;
  background: transparent;
  border: none;
  box-shadow: none;
  border: 1px solid tomato;
  color: #ccc;
  border-radius: inherit;
  resize: none;
  padding: 5px;
  color: #000;
}
#form3 input::-webkit-input-placeholder {
  color: #000;
}
#form3 textarea::-webkit-input-placeholder {
  color: #000;
}
#form3 button{
  padding: 15px 40px;
}
.bg2{
  height: 490px;
  -webkit-filter: blur(20px);
}
.modal-body form input {
    margin-top: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    border-bottom: 1px solid tomato;
    color: #666;
    border-radius: inherit;
}

blur.html

<button data-toggle="modal" data-target="#myModal2">Написать</button>
<div class="modal fade" id="myModal2">
    <div class="modal-dialog modal2">
        <div class="modal-content">
         <!--  <div class="modal-header">
            <h3 class="modal-title">Заказать справку</h3>
          </div> -->
          <div class="modal-body">
          <div class="bg bg2"></div>
            <form id="form3" method="post" class="headerform">
            <input type="hidden" name="write_us">
                <div class="form-group">
                    <label>
                        <input type="text" class="first_name name" name="name" placeholder="Ваше имя" >
                    </label>
                    <label>
                        <input type="text" class="phone" id="write_us" name="phone" placeholder="+7 (___) ___-__-__" >
                    </label> 
                    <label>
                        <input type="email" class="mail" name="email" placeholder="Ваш Mail" >
                    </label> 
                    <label>
                        <textarea name="text" placeholder="Задайте ваш вопрос"></textarea>
                    </label>

                </div>
                <button  id="submitForm" class="submit"  type="submit">Отправить</button>
            </form>
          </div>
          <!-- <div class="modal-footer">
          </div> -->
        </div>
    </div>
</div>