html {
  height: 100%;
  width: 100%;
}

body {
    font-family: Arial, sans-serif;
}

.navbar {
    background-color: #333;
    overflow: hidden;
    color: white;
}

.navbar a {
    float:left;
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

.navbar a:hover {
    background-color: #ddd;
    color: black;
}

img {
  border-radius: 15px;
}

.section, .sectiona{
  background-color:royalblue;
  border-radius: 15px;
  padding: 15px;
  margin-top: 10px;
}

.sectiona{
  background-color: black;
  color: white;
}

.Footer{
  background-color:grey;
  border-radius: 15px;
  padding: 15px;
  margin-top: 10px;
}