body {
    font-family: "Roboto";
    padding: 3%;
    text-decoration: none;
}
h1 {
    font-weight: 800;
    font-size: 18px;
    color: #000000;
    width: 100%;
    display: flex;
    justify-content: center;
    padding: 15px;
}

/*NO TOCAR*/
header { 
    background-color: #787878;
    width: 100%;
    height: 200px;
}
/**/

/*NO TOCAR*/
main { 
    width: 100%;
    height: 800px;
    display: flex;
    justify-content: space-around;
}
/**/

/*NO TOCAR*/
.section1 { 
    background-color: #b4b4b4;
    width: 70%;
}
/**/

/*NO TOCAR*/
aside { 
    background-color: #3c3c3c;
    width: 30%;
}
/**/

.first {
    display: flex;
    justify-content: space-around;
    width: 100%;
}

.first .article1 {
    background-color: #ffffff;
    width: 27%;
    height: 250px;
    margin: 3%;
}

footer { 
    background-color: #787878;
    width: 100%;
    height: 100px;
}

h2 {
    color: #000000; 
    font-size:36px;
    padding-top: 15px;
    width: 100%;
}

.a2 {
    font-size: 16px;
    color: #000000;
    font-weight: 700;
    text-decoration: underline;
}