.contenedor {
            width: 95vw;
            margin: 40px auto;
            padding: 20px;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 25px;
            background-color: gray;
            border-radius: 15px;
            box-shadow: 2px 2px 3px gray;
        }

        .articulo {
            background: #fff;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            transition: transform 0.2s ease;
            text-decoration: none;
        }

        .articulo:hover {
            transform: scale(1.02);
        }

        .articulo img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .articulo h3 {
            padding: 15px;
            margin: 0;
            font-size: 18px;
            color: #333;
        }

        .categoria {
            padding: 0 15px 10px 15px;
            color: #777;
            font-size: 14px;
        }

        .fecha {
            padding: 0 15px 15px 15px;
            color: #aaa;
            font-size: 13px;
        }