.ibm-plex mono-medium {
    font-family: "IBM Plex Mono", monospace;
    font-weight: 500;
    font-style: normal;
  }
  
  

* {
    margin: 0;
    padding: 0;
  }



body {
    font-family: "IBM Plex Mono", monospace;
    font-weight: 800;
    
    background: url('./Introduction.png') no-repeat center center fixed;
  background-size: cover;
  
}


header {
  width: 80%;
  padding: 0 10%;
  height: 50px;
  overflow-y: hidden;
  position: fixed;
  top: 0;
  left: 0;
  margin-bottom: 10px;
  z-index: 10;
  background-color: rgba(0, 0, 0, 0.208);
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
 
}

header h1 {

  color: #ffffff;
}

nav ul {
  display: flex;
  list-style-type: none;
  text-align: center;
  background-color: rgba(0, 0, 0, 0);
}

nav li {
  font-size: 18px;
  height: 50px;
  line-height: 50px;
  width: 120px;
}

nav a {
  text-decoration: none;
  color: #ffffff;
  display: block;
  transition: all 1s;
}

nav a:hover {
  background-color: rgba(255, 255, 255, 0.203);
  color: white;
}