.main-container {
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    justify-content: center;
    text-align: center;
}

.plot-container {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.plot-item {
    flex: 0 1 33%
}

.img-bars {
    width: 1500px;
    height: 500px;
    border: solid
}
 
img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}