body {
  margin: 0;
  padding: 0;
  background-image: url("background.png");
  background-size: cover;
  background-repeat: no-repeat;
}

body h1 {
  text-align: center;
}

.ohodnoceni {
  text-align: right;
  margin-right: 50px;
}

header {
  width: 100%;
  background-color: silver;
  padding: 20px 0;
}

main {
  width: 100%;
  padding: 20px;
  background-color: lightgrey;
  min-height: 500px;
  overflow-y: auto;
}

.table {
  border: solid;
  border-collapse: collapse;
}

.table td {
  border: 1px solid;
}

footer {
  text-align: center;
  padding: 10px;
  background-color: #333;
  color: white;
}

.navbar {
  background-color: purple;
}
.navbar a {
  color: white;
  font-weight: bold;
  text-transform: uppercase;
  margin: 0 15px;
}
.navbar a:hover {
    color: cyan;
}