*{
    margin: 0 auto;
}

.menu {
    list-style: none;
    display: flex;
    overflow: hidden;
    padding: 0;
    width: 100%;
    background-color: black;
}

.menu li {
    margin: 0;
    padding: 20px;
    transition: background-color 0.3s ease-in-out;
  }

.menu li a{
    text-decoration: none;
    font-size: 24px;
    color: white;
  }

.menu li:hover {
    background-color: #f39c12;
    border-radius: 5px;
  }
.menu li a:hover {
    font-weight: bold;
  }

  @media only screen and (max-width:600px) {
    .menu{
      flex-flow: column;
    }
  }