#footer {
    min-height: 90px;
    background: #ededed;
    position: relative;
}
.footer-link {
    display: inline-block;
    background-repeat: no-repeat;
    margin-right: 30px;
    -webkit-filter: grayscale(100%);
    filter: grayscale(100%);
}

@media only screen and (max-width: 600px) {
  .footer-link {
      margin-right: 5px !important;
  }
}

.no-filter {
    filter: none;
    -webkit-filter: none;
}

.footer-link:hover {
    -webkit-filter: grayscale(0%);
    filter: grayscale(0%);
}

.footer-link__hhmi {
    min-width: 145px;
    min-height: 24px;
    background-image: url("../../img/site/logo_hhmi.png");
}

.footer-link__upf {
    min-width: 119px;
    min-height: 40px;
    background-image: url("../../img/site/logo_upf.png");
}

.footer-link__crg {
    min-width: 79px;
    min-height: 40px;
    background-image: url("../../img/site/logo_crg.png");
}

.footer-link__zimin {
    min-width: 73px;
    min-height: 81px;
    background-image: url("../../img/site/logo_zimin.png");
}

.footer-link__uam {
    min-width: 40px;
    min-height: 40px;
    background-image: url("../../img/site/logo_uam_crop_resize.png");
}

.vertical-center-flexbox {
    display: flex;
    align-items: center;
}

.footer-link__fb {
    min-width: 11px;
    min-height: 20px;
    background-image: url("../../img/site/social_fb.png");
    margin: 0 auto;
}

.footer-link__vk {
    min-width: 19px;
    min-height: 20px;
    background-image: url("../../img/site/social_vk.png");
    margin: 0 auto;
}