* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

header {
    background-color: #333;
    color: #fff;
    justify-content: space-between;
    align-items: center;
}

/* Buttons */
.button {
    background-color: #555;
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    text-align: center;
  }
  
.button:hover {
    background-color: #555;
}
  
.button:active {
    background-color: #222;
}

/* Aside */
aside {
    background-color: #acacac;
    font-size: small;
    background-color: #444;
    color: #fff;
    padding: 10px;
    text-align: center;
}


/* Footer */
footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px;
}