.social {
    display: flex;
    align-items: center;
}
.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 3px;
    border: 1px solid var(--color-b1-txt);
    border-radius: 100%;
    line-height: 1;
    font-size: 0;
    margin: 0 2px;
    width: 20px;
    height: 20px;
    text-align: center;
}
.social-icon::before {
    font-family: FontAwesome;
    font-size: 10px;
    color: var(--color-b1-txt);
}
.social-icon_fb::before {
    content: '\f09a';
}
.social-icon_vk::before {
    content: '\f189';
}
.social-icon_in::before {
    content: '\f16d';
}