body {
    background-color: #181b1f;
    font-family: "Verdana", "Arial", sans-serif;
}

h1 {
    color: #ccccdc;
    font-family: "Verdana", "Arial", sans-serif;
}

.row {
    display: flex;
}
.column {
    flex: 50%;
    display: flex;
}

.block {
    flex: 33.33;
    border: none;
    padding: 5px 1px;
    margin: 10px 2px;
    border-radius: 5px;
    font-size: 20px;
    color: #181b1f;
    background-color: #ccccdc;
}

@media (orientation: portrait) {
    .plot-box {
        position: relative;
        width: 100%;
        height: 0;
        padding-top: 100%
    }
}
@media (min-width: 512px) {
    .plot-box {
        position: relative;
        width: 100%;
        height: 0;
        padding-top: 50%
    }
}

.plot {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0; 
    right: 0;
    width: 100%;
    height: 100%
}