unstyle form mixin, for possible inclusion into bedrock

unstyle-form.less

// mixin - extends mixins from aebsr/bedrock
.unstyle-form () {
  textarea, select, input[type="date"], input[type="datetime"], input[type="datetime-local"], input[type="email"], input[type="month"], input[type="number"], input[type="password"], input[type="search"], input[type="tel"], input[type="text"], input[type="time"], input[type="url"], input[type="week"]{
    .background-clip(padding);
    .border-radius(0);
    
    -webkit-appearance: none;
    background-color: #fff;
    color: #000;
    outline: 0;
    margin: 0;
    padding: 0;
    vertical-align: middle;
    border: none;
  }
  
  fieldset, button {
    -webkit-appearance: none;
    border: none;
    padding: 0;
    margin: 0;
  }

  button {
  	background: white;
  	color: #000;
  }
  
  legend {
    padding: 0;
  }
}

// usage
.newsletter {
  .unstyle-form();
}