td.jsg_header_menu {
  vertical-align: top;
  padding-top: 1em;
  position: relative;
}

td.jsg_header_menu a.sns_links {
    position: absolute;
    bottom: 0;
    right: 0;
    margin-bottom: 0.8em;
    margin-right: 1.2em;
}
td.jsg_header_menu a.sns_links i.fab.fa-instagram {
    color: #fff;
    font-size: 2.6em;
    opacity: 0.8;
}
td.jsg_header_menu a.sns_links:hover i.fab.fa-instagram {
    opacity: 1;
}