* {
    box-sizing: border-box;
    /* padding: 0px; */
    /* margin: 0px; */
    -webkit-text-decoration: 0px;
    text-decoration: 0px;
    /* list-style: none; */
    font-family: Tahoma, Geneva, Verdana, sans-serif;
  }

  body,
  html {
    height: 100%;
  }

  @media (max-width: 850px){
    .header-search{
      opacity: 0;
      visibility: hidden;
    }
      .container .header .header__left h4 {
      display: none;
      }
  }

  @media (max-width: 850px) {
    #issn {
      display: none;
    }

    .lang a {
      font-size: 14px;
    }

    .under-header {
      text-align: center;
    }

    .under-header #header-text {
      text-align: center;
      margin: 0px auto;
    }

    .under-header .header-search {
      margin: 0px auto;
    }

    .under-header .header-search input {
      width: 55vw;
      opacity: 0.4;
    }

    .header {
      padding: 5px 5px;
    }
  }

  .container {
    display: flex;
    height: 100%;
    flex-direction: column;
    max-width: 90vw;
  }

  .container .header {
    background: url("images/header.jpg");
    font-family: Tahoma, Geneva, Verdana, sans-serif;
    background-repeat: no-repeat;
    background-size: cover;
    display: flex;
    justify-content: space-between;
    padding: 5px 3rem;
    min-height: 7rem;
  }

  .container .header .header__left {
    display: block;
    padding-top: 11px;
    align-items: center;
  }

  .container .header .header__left h3 {
    margin: 0;
  }

  .container .header .header__right {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }



  .container .header .top-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.3rem;
  }
  .container .header .top-header p {
    margin: 0;
  }

  .container .header .top-header #issn {
    background-color: orange;
    padding: 0px 10px 0px 10px;
  }

  .container .header .top-header .first-title {
    color: white;
    font-size: 12px;
  }

  .container .header .top-header .lang a {
    color: white;
  }

  .container .header .top-header .lang {
    margin-right: 2.3rem;
  }

  .container .header .under-header {
    align-items: center;
  }

  .container .header .under-header .header-search input {
    padding-left: 5px;
    border-radius: 5px;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    -ms-border-radius: 5px;
    -o-border-radius: 5px;
  }

  .container .header .under-header .header-search button {
    background: none;
    color: white;
    border: none;
  }

  .container .navbar {
    background-image: -webkit-linear-gradient(top, rgb(47, 91, 193) 0px, rgb(26, 50, 107) 100%);
  }

  .container .navbar .navbar-nav .active {
    background-color: orange;
  }

  .container .navbar .navbar-nav .nav-item {
    display: flex;
    align-items: center;
    text-align: center;
  }

  .container .navbar .navbar-nav .nav-item .nav-link {
    color: white;
    font-size: 14px;
  }
  .container main {
    flex: 1;
  }

.container main .row .card-header {
    font-weight: 500;
    background: none;
    color: #164469;
    margin: 20px 10px 0px 15px;
    font-size: 30px;
}
.container main .row {
    height: 100%;
  }
.container main .row .about {
    margin-top: 10px;
    border: none;
  }


  .container footer {
    background-color: #296cb3;
  }
  .container footer p {
    text-align: right;
  }