@mixin clearfix{
  &:after,
  &:before{
    display: table;
    content:"";
  }

  &:after{
    clear: both;
  }
}

@mixin placeholder($color){
  &::-moz-placeholder{
    color: $color;
  }

  &::-webkit-input-placeholder{
    color: $color;
  }

  &:-ms-input-placeholder{
    color: $color;
  }

  &::placeholder{
    color: $color;
  }
}