svg {
    border: 2px dotted gray;
}

path, circle {
    stroke-width: 2px;
    fill-opacity: 50%;
}

path.axis {stroke: black;}
path.input, circle.input {stroke: #5c3566; fill: #5c3566;}
path.output, circle.output {stroke: #729fcf; fill: #729fcf;}
path.success, circle.success {stroke: #4e9a06; fill: #4e9a06;}

.controls {
    border 2px dotted gray;
    width: 600px;
    text-align: right;
}

.controls a {
    float: left;
}