<div style="margin-bottom: 80px; padding-bottom: 1px; position: relative">
	<span class="a-form-error">Please fill this field.</span>
</div>

.a-form-error {

    $caret-width: em(5px);

    @include caret($caret-width, up);
    background: color('gray');
    border-radius: $base-radius;
    left: 0;
    margin-top: $caret-width;
    max-width: 100%;
    padding: em(5px 10px);
    position: absolute;
    top: 100%;
    z-index: 9;

    &:after {

        color: color('gray');
        left: $caret-width;
        margin: 0;
        position: absolute;
        top: -$caret-width;

    }

}