body{
    background: #999;
    margin: 0;
    background-image: url("https://images.pexels.com/photos/3184464/pexels-photo-3184464.jpeg");
background-size: cover;
background-repeat: no-repeat;
}
.navbar{
    width: 100%;
    background: #6699cc;
box-shadow: 0 2px 5px 0 rgba(0,0,0,0.16), 0 2px 10px 0 rgb(0,0,0,0.12);



}
ul{
    text-align: left;
    display: inline;
    margin: 0;
    padding: 0;
    list-style: none;
}
ul li{
    display: inline-block;
    position: relative;
    padding: 20px 15px;
    background: green;
    background-size: 50px;
    margin-left: 10px;

}
 ul li a{
 text-decoration: none;
 padding: 25px 20px;
 color: black;
font-size: 15px;
    }
ul li:hover{
  background: #4dd0e1;
  color: white;  
}
ul li ul{
    padding: 0;
    position: absolute;
    top: 70px;
    left: 0;
    width: 250px;
    display: none;
    visibility: hidden;
    box-shadow: 0 2px 5px 0 rgba(0,0,0,0.16), 0 2px 10px 0 rgb(0,0,0,0.12);
}
ul li ul li{
    background: #00acc1;
    display: block;
}
ul li ul li:hover{
    background: #4dd0e1;
}
ul li:hover ul{
    display: block;
    opacity: 1;
    visibility: visible;

}
ul ul ul li{
 display: none;   
}
ul ul li:hover li{
    display: block;
}
ul ul ul{
    left: 100%;
    top: 0;
}
select{
    font-size: 6;
    background:honeydew;
}
p{
    text-align: center;

}
h1{
    text-align: center;
    padding: 50px;
    color: black;
    padding-bottom: 5px;
    padding-top: 200px;
    margin-bottom: 0px;
}
h3{
    text-align: center;
    color: black;
    padding: 0px;
    padding-top: 0px;
}
li button{
 background-size: cover;

}
header{
 background: green;
}