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

.grid-responsive li {
    display: block;
    width: 100%;
}

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

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

    h1 {
        font-size: 2.5rem;
    }

    .grid-responsive li{
        width: 25%;
    }
}

@media (max-width: 500px) {
    h1 {
        font-size: 1.5rem;
    }
}

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

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

.grid {
    padding-left: 0;
}

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

.grid-responsive aside {
    margin: 10px;
}

.grid-responsive{
    margin: 1rem -10px;
    padding-left: 0;
}