header {
    display: grid;
    grid-template-columns: 3fr 1fr; /* 75% for nav, 25% for aside */
    grid-gap: 10px;
    background-color: #333;
    color: white;
    padding: 20px;
    align-items: center;
}

header h2 {
    grid-column: 1 / 3; /* Title spans both columns */
}

nav {
    display: grid;
    gap: 10px;
}

.button {
    float: left;
}

.button:after {
    content: "";
    clear: both;
    display: grid;
}

main {
    display: grid;
    grid-template-columns: 3fr 1fr;
    margin: 10px;
    padding: 20px;
    grid-gap: 20px;
}

main p {
    grid-column: 1;
}

figure {
    display: grid;
    grid-column: 3;
    align-items: center;
    justify-content: center;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px;
}