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

body {
    background-color: #121212;
    color: #f0f0f0;
    font-family: Arial, sans-serif;
    line-height: 1.5;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

header {
    background-color: #000000;
    text-align: center;
    padding: 15px;
    border-bottom: 2px solid #a71930;
}

header h1 {
    color: #ffffff;
    font-size: 1.8em;
}

nav {
    background-color: #1a1a1a;
}

nav ul {
    list-style-type: none;
    text-align: center;
}

nav li {
    display: block;
    border-bottom: 1px solid #333333;
}

nav a:link, nav a:visited {
    color: #ffffff;
    text-decoration: none;
    display: block;
    padding: 10px;
}

nav a:hover, nav a:active {
    background-color: #a71930;
}

main {
    padding: 15px;
}

section {
    margin-bottom: 20px;
}

article {
    background-color: #1e1e1e;
    border: 1px solid #333333;
    padding: 10px;
    margin-bottom: 15px;
}

h2, h3 {
    color: #a71930;
    margin-bottom: 10px;
}

p {
    margin-bottom: 10px;
}

.price {
    font-weight: bold;
    color: #a71930;
}

aside {
    background-color: #1a1a1a;
    padding: 10px;
    border: 1px solid #333333;
}

footer {
    background-color: #000000;
    text-align: center;
    padding: 15px;
    border-top: 2px solid #a71930;
    font-size: 0.8em;
}

footer a {
    color: #a71930;
}

@media screen and (min-width: 600px) {
    nav ul {
        display: flex;
        justify-content: center;
    }

    nav li {
        border-bottom: none;
        border-right: 1px solid #333333;
    }

    nav li:last-child {
        border-right: none;
    }

    .grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }
}

@media screen and (min-width: 900px) {
    .grid {
        grid-template-columns: 1fr 1fr 1fr;
    }

    .layout-wrapper {
        display: grid;
        grid-template-columns: 3fr 1fr;
        gap: 15px;
    }
}