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

body {
    font-family: 'Open Sans', sans-serif;
    padding: 10px;
    background-color: cadetblue;
}


.content {
    background-color: white;
    padding: 10px;
}

.header {
    text-align: center;
    padding: 32px;
    color: bisque;
}

.row {
    display: -ms-flexbox;
    display: flex;
    flex-wrap: wrap;
    padding: 0 4px;
}

.column {
    flex: 25%;
    max-width: 25%;
    padding: 0 4px;
}

.column img {
    margin-top: 8px;
    vertical-align: middle;
    width: 100%;
}

/* Response layout - makes a two column layout instead of four columns */ 

@media screen and (max-width: 800px) {
    .column {
        flex: 50%;
        max-width: 50%;
    }
}

/* Responsive Layout - makes a two column stack on top of each other instead of next to each other */

@media screen and (max-width: 600px) {
    .column {
        flex: 100%;
        max-width: 100%;
    }
}