header {
  background: #3b3939; 
  color: #000000; 
  padding: 10px 20px; 
  position: relative; 
} 

.hlavicka {
  text-align: center;
}

html, body { 
  margin: 0; 
  padding: 0; 
  min-height: 100%; 
  overflow-y: auto; 
} 

body { 
  display: flex; 
  flex-direction: column; 
  min-height: 100vh; 
  font-family: 'Arial', sans-serif; 
  background: #363333; 
  color: #000000; 
  line-height: 1.6; 
} 

.menu { 
  position: relative; 
} 

.menubtn { 
  background-color: #272525; 
  color: white; 
  padding: 16px; 
  font-size: 16px; 
  border: none;
  border-radius: 15px;
  cursor: pointer; 
} 

.menu-obsah { 
  display: none; 
  position: absolute; 
  background-color: #3b3939; 
  min-width: 200px; 
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2); 
} 

.menu-obsah a { 
  color: black; 
  padding: 12px 16px; 
  text-decoration: none; 
  display: block; 
}

.menu-obsah a:hover { 
  background-color: #272525 
}

.menu:hover .menu-obsah { 
  display: block; 
}

.menu:hover .menubtn { 
  background-color: #2e2c2c; 
}

footer { 
  background: hsl(0, 2%, 23%); 
  color: #000000; 
  position: fixed; 
  bottom: 1px; 
  text-align: center; 
  padding: 10px 0; 
  width: 100%; 
}

.content {
  background-color: hsl(0, 2%, 23%); 
  padding: 20px;
  border-radius: 10px;
  margin: 20px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  color: #000;
  max-width: 800px; 
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 100px;
}

table, th, td {
  border: 2px solid rgb(0, 0, 0);
  border-collapse: collapse;
}