.grid img{
    width: 90%;
}
.grid li{
    display: block;
}
.using-floats li{
    float: left;
}
.using-floats::after{
    content: "";
    display: block;
    clear: both;
}
.grid li{
    width:25%;
    font-size:0.8rem;
    margin-bottom:1rem;
}
.using-inline-block li{
    display: inline-block;
}
.using-inline-block{
    font-size: 0;
}
.using-flex{
    display: flex;
    flex-wrap: wrap;

}
.using-grid{
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
}
.using-grid li{
    width:100%;
}