body {
    margin-left: auto; 
    margin-right: auto;
    width: 90%;
    max-width: 800px;
}

@media (min-width: 640px) {
    html {background-color: #eaf6ff;}
}

.grid {
    padding: 0;
}

.grid aside {
    width: 170px;
    margin: 10px;
}

.grid li {
    font-size: 0.8rem;
    display: flex;
}

.flex {
    display: flex;
    flex-wrap: wrap;
}

.grid2 {
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    margin-left: -10px;
    margin-right: -10px;
    margin-top: 1rem;
    margin-bottom: 1rem;
}

.grid2 aside {
    margin: 10px;
}

.grid2 li {
    width: 100%;
    display: flex;
}

@media (min-width: 480px) {
    .grid2 li {max-width: 50%;}
}

@media (min-width: 640px) {
    .grid2 li {max-width: 25%;}
}