body {
    background: url("./bg/ceu5.jpeg") no-repeat center center;
    background-size: cover;
    height: 92vh;
  }
  body,
  ul {
    margin: 0px;
    padding: 0px;
    color: white;
  }
  
  a {
    color: black;
    text-decoration: none;
    font-family: sans-serif;
  }
  
  a:hover {
    background: rgba(0, 0, 0, 0.05);
  }
  
  #logo {
    font-size: 1.5rem;
    font-weight: bold;
    height: 70px;
  }
  
  #header {
    box-sizing: border-box;
    height: 70px;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: black;
    color: white;
  }
  #nav{
      background-color:black;
      color: white;
  }
  
  #menu {
    display: flex;
    list-style: none;
    gap: 0.5rem;
  }
  
  #menu a {
    display: block;
    padding: 0.5rem;
    color: white;
    font-size: 16pt;
  }
  
  #btn-mobile {
    display: none;
  }
  
  @media (max-width: 600px) {
    #menu {
      display: block;
      position: absolute;
      width: 100%;
      top: 70px;
      right: 0px;
      background: #e7e7e7;
      transition: 0.6s;
      z-index: 1000;
      height: 0px;
      visibility: hidden;
      overflow-y: hidden;
    }
    #nav.active #menu {
      height: calc(100vh - 70px);
      visibility: visible;
      overflow-y: auto;
    }
    #menu a {
      padding: 1rem 0;
      margin: 0 1rem;
      border-bottom: 2px solid rgba(0, 0, 0, 0.05);
    }
    #btn-mobile {
      display: flex;
      padding: 0.5rem 1rem;
      font-size: 1rem;
      border: none;
      background: none;
      cursor: pointer;
      gap: 0.5rem;
    }
    #hamburger {
      border-top: 2px solid;
      width: 20px;
    }
    #hamburger::after,
    #hamburger::before {
      content: '';
      display: block;
      width: 20px;
      height: 2px;
      background: currentColor;
      margin-top: 5px;
      transition: 0.3s;
      position: relative;
    }
    #nav.active #hamburger {
      border-top-color: transparent;
    }
    #nav.active #hamburger::before {
      transform: rotate(135deg);
    }
    #nav.active #hamburger::after {
      transform: rotate(-135deg);
      top: -7px;
    }
  }