@media screen and (min-width: 600px) {
  .navbar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
    width: 100%;
    height: 80px;
    background-color: #FFFFFF;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #D3D3D3;
  }
  
  .navbar .left {
    font-family: "Roboto Flex", sans-serif;
    display: flex;
    gap: 15px;
    padding-left: 50px;
  }
  
  .navbar .center {
    font-family: 'DM Serif Text', serif;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-weight: 1000;
  }
  
  .navbar a {
    text-align: left;
    padding: 8px 8px;
    text-decoration: none;
    font-size: 17px;
    color: #000000;
  }
  
  .navbar .name {
    text-align: center;
    font-size: 25px;
  }
  
  .pubs {
    font-family: "Roboto Flex", sans-serif;
    margin-left: 10%;
    margin-right: 10%;
    padding-top: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
  }

  .pubs-conf {
    font-family: "Roboto Flex", sans-serif;
    margin-left: 10%;
    margin-right: 10%;
    padding-top: 50px;
  }

  .pubs-journal {
    font-family: "Roboto Flex", sans-serif;
    margin-left: 10%;
    margin-right: 10%;
    padding-top: 50px;
  }


  .pubs .preprints {
    flex: 80%;
  }

  .pubs .tatu {
    flex: 20%;
  }

  .pubs .bagre {
    flex: 20%;
  }
  
  .pubs .body .authors {
    font-size: 15px;
    color: gray;
  }
  
  .pubs .journal {
    font-size: 15px;
    color: gray;
  }
  .pubs-conf .journal {
    font-size: 15px;
    color: gray;
  }

  .pubs-journal .journal {
    font-size: 15px;
    color: gray;
  }
   
  ul {
    padding-left: 0.5cm;
    list-style: none;
  }
  
  li {
    margin-bottom: 20px;
  }
  
  a {
    color: black;
  }
  
  .authors #link {
    text-decoration: none;
    font-weight: bold;
    color: dimgray;
  }
  
  
  .content {
    font-family: "Roboto Flex", sans-serif;
    margin-top: 81px;
    margin-left: 10%;
    margin-right: 10%;
    padding-top: 50px;
    display: flex;
    gap: 50px;
    justify-content: center;
  }
  
  .content .about {
    font-size: 50px;
    color: black;
  }
  
  .content .about .name {
    font-size: 30px;
    color: black;
  }
  
  .content .about .advisor {
    padding-top: 20px;
    font-size: 24px;
    color: black;
  }
  
  .content .about .advisor a{
    text-decoration: none;
    color: black;
    font-weight: bold;
  }
  
  
  .content .about .mail {
    padding-top: 5px;
    font-size: 17px;
    color: black;
  }
  
  .content .about .interests {
    font-size: 16px;
    color: black;
  }
  
  .content .about .links {
    margin-top: -25px;
  }
  .portrait { 
    width: 470px;
    height: 515px;
  }
}

@media screen and (max-width: 600px) {
  .navbar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
    width: 100%;
    height: 80px;
    background-color: #FFFFFF;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #D3D3D3;
  }
  
  .navbar .left {
    font-family: "Roboto Flex", sans-serif;
    display: flex;
    gap: 15px;
    padding-left: 50px;
  }
  
  .navbar .center {
    font-family: 'DM Serif Text', serif;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-weight: 1000;
  }
  
  .navbar a {
    text-align: left;
    padding: 8px 8px;
    text-decoration: none;
    font-size: 17px;
    color: #000000;
  }
  
  .navbar .name {
    text-align: center;
    font-size: 25px;
    display: none;
  }
  
  .pubs {
    font-family: "Roboto Flex", sans-serif;
    margin-top: 81px;
    margin-left: 10%;
    margin-right: 10%;
    padding-top: 50px;
    align-items: center;
  }
  
  .pubs .body .authors {
    font-size: 15px;
    color: gray;
  }
  
  .journal {
    font-size: 15px;
    color: gray;
  }
  
  ul {
    padding-left: 0.5cm;
    list-style: none;
  }
  
  li {
    margin-bottom: 20px;
  }

  .pubs .tatu {
    display: none;
  }
  
  a {
    color: black;
  }
  
  .authors #link {
    text-decoration: none;
    font-weight: bold;
    color: dimgray;
  }
  
  .content {
    font-family: "Roboto Flex", sans-serif;
    margin-top: 81px;
    margin-left: 10%;
    margin-right: 10%;
    padding-top: 50px;
  }
  
  .content .about {
    font-size: 25px;
    color: black;
  }
  
  .content .about .name {
    font-size: 20px;
    color: black;
  }
  
  .content .about .advisor {
    padding-top: 20px;
    font-size: 19px;
    color: black;
  }
  
  .content .about .advisor a{
    text-decoration: none;
    color: black;
    font-weight: bold;
  }
  
  
  .content .about .mail {
    padding-top: 5px;
    font-size: 12px;
    color: black;
  }
  
  .content .about .interests {
    font-size: 11px;
    color: black;
  }
  
  .content .about .links {
  }
  .content .portrait img{ 
    width: 300px;
    height: auto;
  }


  .pubs-conf {
    font-family: "Roboto Flex", sans-serif;
    margin-left: 10%;
    margin-right: 10%;
    padding-top: 50px;
  }


}