.grid img {
    width: 150px;
    padding: 0;
} 

.grid li {
    padding: 0; 
    display: block;
    width: 25%;
    text-align: center;
    font-size: 0.8rem;
    margin-bottom: 1rem;

} 

.using-floats li {
    float: left;

}

.using-floats::after{ 
    content: "";
    display: block;
    clear: both;
} 

.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%;
}