.close-mail-button {
    $button-size: 27px;

    margin-right: 3px;
    float: left;
    background: $lighter_gray;
    color: $medium_light_grey;
    width: $button-size;
    height: $button-size;
    padding: 0;
    border-radius: 0;

    &:hover, &:focus, &:active {
        background-color: darken($lighter_gray, 2);
        color: darken($medium_light_grey, 10);
    }

    i {
        padding: 0;
        margin: 0;
    }
}