header {
  text-align: center;
  background-color: #0077cc;
  color: white;
  padding: 15px;
  border-radius: 8px;
}

table,
th,
td {
  border: 1px solid black;
  border-collapse: collapse;
  background-color: white;
  
}

article{
    background-color: #ffffff;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    margin-top: 10px;
}

body {
  font-family: Arial, sans-serif; 
  background-color: #f5f5f5; 
  margin: 20px;
}
h1 {
  color: black;
}

h2 {
  color: red;
}
h3 {
  color: red;
}
p {
  font-size: 20px;
  text-align: left;
}



button {
  background-color: #0077cc;
  color: white; 
  padding: 10px 20px; 
  border: none; 
  border-radius: 6px; 
  cursor: pointer; 
  transition: background-color 0.3s;
}
button:hover {
  background-color: orange; 
}
section {
  background-color: lightblue;
  padding: 15px;
  border-left: 4px solid #0077cc;
  margin-top: 20px;
}   

footer {
  text-align: left;
  padding: 10px;
  background-color: moccasin;
  position: fixed;
  bottom: 0;
  width: 100%;
}