body {
    margin: 15;
    padding: 15;
}

header {
    background-color: #ffffff;
    color: red;
    padding: 0px;
    text-align: center;
}

nav {
    display: flex;
    justify-content: center;
    background-color: #ff0000;
    padding: 15px;
}

nav a {
    color: white;
    padding: 15px 20px;
    text-decoration: none;
    font-weight: bold;
}

nav a:hover {
    background-color: #ffffff;
    color : red
}

.content {
    padding: 20px;
    margin: 0px;
}

.footer {
    background-color: #ff0000;
    color: white;
    text-align: center;
    padding: 2px;
}