#flex1{
    color: w;
}
#top_address{
    font-size: 72px;
    background-image: linear-gradient(90deg, #f28908, #f2b40e);
}
#ul{
    list-style: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    display: inline;
  text-align: center;
  padding: 16px;
  text-decoration: none;
}
nav li{
    list-style: none;
}
nav li a {
    
    margin-right: 10px;
    text-decoration: none;
    padding: 2px;
    color: black;
    
}
nav li :hover{
    background-color: darkgray;
}
nav ul{
    
    display: flex;
}
nav> ul> li:hover > ul{
    display: block;
}
#border {
    padding-left: 20px;
    padding-right: 20px;
}