.partners {
  text-align: center;
  margin: 1.5em 0;
  background:white;
}


      .partners a {
      display: inline-block;
      height: 68px;
      background-position: center center;
      background-repeat: no-repeat;
      background-size: contain;
      /*padding: 0px 10px;*/
    }
          .partners a.partner_nno {
        width: 109px;
        background-image: url('../css/layout-p-nno-off.jpg');
      }
      .partners a.partner_nno:hover {
        background-image: url('../css/layout-p-nno.jpg');
      }
          .partners a.partner_nros {
        width: 109px;
        background-image: url('../css/layout-p-nros-off.jpg');
      }
      .partners a.partner_nros:hover {
        background-image: url('../css/layout-p-nros.jpg');
      }
          .partners a.partner_nadace {
        width: 129px;
        background-image: url('../css/layout-p-nadace-off.jpg');
      }
      .partners a.partner_nadace:hover {
        background-image: url('../css/layout-p-nadace.jpg');
      }
          .partners a.partner_eea {
        width: 109px;
        background-image: url('../css/layout-p-eea-off.jpg');
      }
      .partners a.partner_eea:hover {
        background-image: url('../css/layout-p-eea.jpg');
      }
            @media only screen and (max-device-width: 680px) {
      .partners a {
        height: 18vw;
      }
              .partners a.partner_nno {
          width: 29vw;
        }
              .partners a.partner_nros {
          width: 29vw;
        }
              .partners a.partner_nadace {
          width: 34vw;
        }
              .partners a.partner_eea {
          width: 29vw;
        }
          }
        @media only screen and (max-device-width: 380px) {
      .partners a {
        height: 20vw;
      }
              .partners a.partner_nno {
          width: 32vw;
        }
              .partners a.partner_nros {
          width: 32vw;
        }
              .partners a.partner_nadace {
          width: 38vw;
        }
              .partners a.partner_eea {
          width: 32vw;
        }
          }