body { 
  background-color: #fffbed;
  color: #0b0b1b;
  font-family: 'Caveat', cursive;
  padding: 20px;
}

header {
  width: 800px;
  height: 60px;
  margin: auto;
  font-size: 30px;
  text-align: center;
}

#content {
  margin: auto;
  width: 800px;
  min-height: 600px;
  background-color: #fffbed;
  border: 3px solid #000000;
  font-family: verdana;
  padding: 5px;
}

#topblock {
  width: 780px;
  height: 80px;
  margin: auto;
  border: 2px solid black;
  font-family: times; 
  font-size: 18px;
  padding: 5px;
}

#bottomblock {
  width: 780px;
  min-height: 400px;
  margin: auto;
  border: 2px solid black;
  border-top: 0px solid black;
  font-family: times;
  padding: 5px;
  font-size: 16px;
}

div {
  border: 1px solid black;
  margin: auto;
  text-align: center;
  font-family: times;
  padding:4px;
}
  
  
.flex {
  display:flex;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  border: 0px solid black;
}

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

#sidebar {
  height: 600px;
  border: 3px solid black;
}