*{margin:0;padding:0;box-sizing:border-box}body{font-family:Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.5;color:#1b263b;background-color:#f8f9fa}h1,h2,h3{font-weight:700}.site-grid-container{width:100%;max-width:1200px;margin:0 auto;text-align:center;background-color:#fff;display:grid;gap:20px;grid-template-columns:1fr;grid-template-areas:"header" "carousel" "navbar" "page-intro" "main-content" "footer"}@media (max-width: 768px){.site-grid-container{background-color:green}}.grid-area-header{grid-area:header;background-color:#e5e5e5}.grid-area-carousel{grid-area:carousel;background-color:#e5e5e5}.grid-area-navbar{grid-area:navbar;background-color:#e5e5e5}.grid-area-page-intro{grid-area:page-intro;background-color:#e5e5e5}.grid-area-main-content{grid-area:main-content}.grid-area-footer{grid-area:footer;background-color:#e5e5e5}