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

header,
main,
footer {
    margin: 0 auto;
    width: 840px;
    box-sizing: border-box;
    align-self: center;
}

nav {
    background-color: steelblue;
    padding: 1rem;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
}

nav a {
    display: block;
    padding: 0.5rem;
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
}

h1 {
    margin-bottom: 0;
    border-bottom: 0;

}

aside {
    width: 20rem;
    margin: 1rem;
    border: 1px solid rgb(0.0.0/0.2);
    padding: 1rem;
    background-color: #eee;
    color: #333;
    text-align: center;
    grid-row: 1;
}

body {
    font-size: 16px;

}


h2 {
    display: block;
    font-size: 1.5rem;
    margin-block-start: 0.83rem;
    margin-block-end: 0.83;
    margin-inline-end: 0px;
    font-weight: bold;

}


.box {
    margin: 1rem;
    border: 1px solid rgb(0, 0, 0, .1);
    padding: 1rem;
    background-color: #eee;
    color: #000;
}

aside h2 {
    position: absolute;
    top: 47px;
    left: 150px;
}

.grid {
    display: grid;
    align-items: center;
}

main {
    grid-column: 2/3;
    margin: 1rem;
}

aside {
    width: 20rem;
    position: relative;
    grid-column: 1/2;
    grid-row: 1/2;
}

main {
    margin: 1rem;
    grid-column: 2;
    text-align: center;

}


footer {
    margin-top: 1em;
    border-top: 1px;
    text-align: center;
}

header,
footer {
    max-width: 840px;
    margin: 0 auto;
}

header,
.grid,
footer {
    max-width: 840px;
}