html {
background-color: navy;

}

body {


}

.maincontain {
    display: flex;
}

.banner {
    display: flex;
    height: 10%;

}

.navigation {
    display: flex;
    width: 100vw;
    height: 4%;

}


ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
  }
  
  li {
    float: left;
  }
  
  li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
  }
  
  /* Change the link color to #111 (black) on hover */
  li a:hover {
    background-color: #111;
  }