header {
    background-color: rgba(27, 31, 34, 0.8);
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: white;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
  }
  @font-face {
    font-family: "RobotoMonoItalic";
    src: url("../font/RobotoMono-BoldItalic.ttf");
  }

  #logo {
    text-decoration: none;
    font-size: 20px;
    font-weight: bold;
    font-family: "RobotoMonoItalic";
    margin-left: 3%;
  }

  nav {
    display: flex;
    align-items: center;
  }

  nav a {
    color: white;
    text-decoration: none;
    margin-left: 20px;
    font-size: 16px;
  }

  @media only screen and (max-width: 869px)  {
  #logo{
    display: none;
  }
}