.flag-icon-background {
    background-size: contain;
    background-position: 50%;
    background-repeat: no-repeat;
}

.flag-icon {
    background-size: contain;
    background-position: 50%;
    background-repeat: no-repeat;
    position: relative;
    display: inline-block;
    width: 1.33333333em;
    line-height: 1em;
}

    .flag-icon:before {
        content: "\00a0";
    }

    .flag-icon.flag-icon-squared {
        width: 1em;
    }

.flag-icon-us {
    background-image: url(../flags/4x3/us.svg);
}

    .flag-icon-us.flag-icon-squared {
        background-image: url(../flags/1x1/us.svg);
    }

.flag-icon-cn {
    background-image: url(../flags/4x3/cn.svg);
}

    .flag-icon-cn.flag-icon-squared {
        background-image: url(../flags/1x1/cn.svg);
    }

.flag-icon-ng {
    background-image: url(../flags/4x3/ng.svg);
}

    .flag-icon-ng.flag-icon-squared {
        background-image: url(../flags/1x1/ng.svg);
    }
}