.output section {
    align-items: flex-start;
    overflow: auto;
}

.box {
    background-color: rgba(0, 0, 255, 0.2);
    border: 3px solid blue;
    float: left;
    width: 65px;
    height: 65px;
}

.box + .box {
    margin-left: 10px;
}

.clear {
    clear: both;
    padding-top: 1em;
}

#example-element-container {
    position: relative;
    text-align: left;
}

#example-element {
    background-color: yellow;
    border: 3px solid red;
    z-index: 1;
}