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

.contenedor {max-width: 1000px; margin: auto;}

header {background-color: yellowgreen; 
    padding: 3rem 0 3rem 0;
    text-align: center;
    color: white;
    font-family: Verdana;
        }

.main {display: flex; padding: 0;}

div section {background-color: aquamarine; 
    padding: 1rem 0 1rem 0;
    text-align: center;
    color: black;
    font-family: Verdana;
    width: 65%;
    
        }
.articulos {display: flex;
	flex-direction: row;
	flex-wrap: wrap;
	justify-content: flex-start;
	align-items: stretch;
	align-content: stretch;
}

div aside {background-color: grey; 
    padding: 1rem 0 2rem 0;
    text-align: center;
    color: black;
    font-family: Verdana;
    width: 35%;
        }

article { background-color: orange; 
    padding: 6rem 4.5rem 6rem 4.5rem; 
    margin: 1rem 0rem 0rem 1rem; 
    text-align: center;
 
}

footer {background-color: darkolivegreen; 
    padding: 2.5rem 0 2.5rem 0;
    text-align: center;
    color: white;
    font-family: Verdana;
        }