:root {
    --main-bg: #f0f0f0;
    --box-color: #3498db;
    --highlight: #e74c3c;
    --text-color: #333;
    --box-size: 120px;
    --header-fontsize: 25px;
    --footer-fontsize: 25px;
}

body {
    font-family: Arial, sans-serif;
    background: var(--main-bg);
    color: var(--text-color);
    margin: 0;
}

header {
    font-size: var(--header-fontsize);
    background: var(--highlight);
    color: white;
    text-align: center;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
}

main {
    margin-top: 100px;
    padding: 20px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    padding-bottom: 80px;
}

section {
    background: white;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 40px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.box {
    width: var(--box-size);
    height: var(--box-size);
    background: var(--box-color);
    color: white;
    text-align: center;
    font-size: 14px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    border-radius: 8px;
}

.static-box {
    position: static;
}

.relative-box {
    background: #2ecc71;
    position: relative;
    left: 200px;
}

.absolute-wrapper {
    height: 200px;
    background: #f9f9f9;
    border: 2px dashed #ccc;
    position: relative;
}

.absolute-box {
    background: #9b59b6;
    position: absolute;
    bottom: 0;
    right: 0;
}

.sticky-box {
    background: #e67e22;
    position: sticky;
    top: 80px;
}

footer {
    width: 100%;
    background: #34495e;
    color: white;
    text-align: center;
    padding: 10px 0;
    font-size: var(--footer-fontsize);
    position: fixed;
    bottom: 0;
    left: 0;
}

@media (max-width: 500px) {
    :root {
        --header-fontsize: 20px;
        --footer-fontsize: 20px;
        --box-size: 60px;
    }
}