html {
  background:linear-gradient(0deg,rgba(29, 182, 242, 1) 0%, rgba(255, 255, 255, 1) 100%);
  text-align:center;
  font-family: "Ubuntu", sans-serif;
}
.topbtn {
  display: flex;
  flex-direction: space-between;
  algin-items: center;
  justify-content: center;
}
.navigatie {
  background-color: skyblue;
  padding: 6px;
  border: 2px solid black;
  margin: 10px;
  border-radius: 5px;
  text-decoration:none;
  color:black;
}
.box {
  background-color: white;
  border: 2px solid black;
  text-decoration:none;
  color:black;
  margin-top: 20px;
  border-radius:50px 50px 50px 50px;
  margin-right: 50px;
  margin-left: 50px;
  padding: 5px;
}