.row>div {
    display: inline-block;
    border: 1px solid red;
    box-sizing: border-box;
    width: 5%;
    height: 100%;
    vertical-align: middle;
}

.row {
    height: 1.5em;
}
 

table {
    border-collapse: collapse;
    margin-bottom: 2em;
}

th, td {
    padding: 0.5em;
    text-align: center;
    border-bottom: 1px solid #ddd;
}

td:first-child {
    text-align: left;
}

* {
    font-family: arial;
}
 
caption {
    font-size: 1.5em;
    white-space: nowrap;
}

#root {
    margin-top: 1em;
}

#root.tableHidden {
  display:none;
}

#root.backgroundColor{
  overflow:clip;
}

.overflowHidden .row div {
    overflow: hidden;
}

.overflowClip .row div {
    overflow: clip;
}

.backgroundColor .row div {
    
background-color: white;
}

button.selected {
    background-color: palegreen;
}

button#start {
    margin-left: 6em;
    background-color: orange;
}
#controls {
    text-align: center;
}