css/playground.css
div.demo-wrapper {
    width: 800px;
    margin-bottom: 50px;
}

div.left-column{
    width: 300px;
    padding-right: 50px;
    vertical-align: top;
    display: flex;
    flex-direction: column;
    align-items: center;
}

table.controls {
    width: 100%;
    margin: auto;
    padding: 15px;
    background-color: #eee;
    font-size: 14px;
    text-align: center;
}

input[type=range] {
    vertical-align: text-top;
    flex-wrap: wrap;
    align-items: center;
}

.display-label{
    font-size: 14px;
    line-height: 1em;
}

#playground_visualization_canvas{
    margin: 10px 5px 0px 5px;
}

#playground_learning_curves_canvas{
    margin-bottom: 5px;
}

div#playground_trees_container{
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: center;
}

canvas.separate_tree_visualization {
    margin: 10px 5px;
}

div.plus_control_element {
    width: 22px;
    height: 22px;
    padding: 13px 3px;
}

div.plus_control_element > div {
    background-image: url('/images/etc/plus-sign.png');
    background-size: 22px 22px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
}

div.plus_control_element.participates-in-sum > div{
    box-shadow: 0 0 0 5px #cbc;
}

div.plus_control_element:hover > div {
    box-shadow: 0 0 0 5px #bdb;
}

canvas.separate_tree_visualization.participates-in-sum {
    outline: 5px solid #cbc;
}

canvas.separate_tree_visualization:hover {
    outline: 5px solid #bdb;
}

div.plus_control_element {
    display: inline-block;
}

canvas.dataset-preview {
    margin: 8px;
    border: 1px solid grey;
    cursor: pointer;
}

canvas.selected-dataset-preview{
    outline: 5px solid #bbb;
}

canvas.dataset-preview:hover {
    outline: 5px solid #bdb;
}

span.train-loss-number{
    display: inline-block;
    width: 60px;
}

span.loss-number{
    display: inline-block;
    width: 40px;
}
