* {
  margin: 0;
  padding: 0;
}
div {
  background-color: black;
  color: white;
}
nav {
  background-color: black;
  color: white;
  display: inline;
}
ul {
  display: inline;
  margin-left: 60%;
}
li:hover {
  color: white;
  cursor: pointer;
}
h1 {
  display: inline;
}
li {
  display: inline;
  color: gray;
}
input {
  width: 60%;
  padding: 5px;
  margin: 15px;
  text-align: center;
  font-style: bold;
}
.box {
  border-color: black;
  border-width: 2px;
  border-style: solid;
  display: inline-block;
  width: 200px;
}
box:hover {
  background-color: gray;
  color: white;
}