.xyzzy {
    display: none;
}
.answer {
    margin-top: 0.5em;
    margin-bottom: 0.5em;
    padding: 5px;
    background-color: #FFD9A1;
}
.answer-right {
    background-color: transparent;
}
.answer-row {
    display: table;
    width: 100%;
}
.answer-label {
    display: table-cell;
    width: 1px;
    padding-right: 0.25em;
    vertical-align: middle;
    white-space: nowrap;
}
.answer-text-input {
    display: table-cell;
    width: 100%;
    background-color: white;
    vertical-align: middle;
    font-size: 16px;
}
.answer-choice-input {
    display: table-cell;
    width: 100%;
    vertical-align: top;
    font-size: 16px;
    border-left: 1px solid black;
    padding-left: 0.5em;
    margin-left: 0.5em;
}
.answer-check {
    display: table-cell;
    width: 16px;
    padding-left: 0.5em;
    font-size: 20px;
    vertical-align: middle;
}
.answer-right .answer-check::before {
    content: "\2714";
    color: green;
}
.answer-wrong .answer-check::before {
    content: "\2718";
    color: red;
}
.answer-window {
    margin: 1em;
    text-align: center
}
.answer-window a {
    text-decoration: none;
    padding: 5px;
    background-color: black;
    color: white;
    font-face: bold;
    font-size: large;
    border: 1px solid black;
    border-radius: 4px;
}
.answer-window a.open {
    background-color: white;
    color: black;
}
pre.jsim {
    margin: 10px;
    padding: 10px;
    background-color: rgb(255,253,227);
}
div.hint {
    margin: 10px;
    padding: 10px;
    background-color: rgb(240,255,240);
    border: 1px solid rgb(176,192,176);
}
.answer-message {
    color: blue;
}
.plot-container {
    background-color: #EEEEEE;
    line-height: 1;
}
.plot-container:active, .plot-container:focus {
    cursor: default;
}
.plot-canvas {
    display: block;
}
.plot-toolbar {
    line-height: 25px;
    cursor: default;
    margin-bottom: 5px;
}
.plot-tool {
    padding: 2px;
    border: 1px solid #EEEEEE;
    vertical-align: middle;
    font: small-caps small sans-serif;
    opacity: 0.2;
}
.plot-tool-spacer {
    display: inline;
    padding-left: 1em;
}
.plot-tool-enabled {
    opacity: 1.0;
}
.plot-tool-enabled:hover {
    border-color: #000;
}
.plot-tool-enabled:active {
    background-color: #CCCCCC;
}
.plot-scrollbar-wrapper {
    height: 20px;
}
.plot-scrollbar {
    height: 10px;
    border: 1px solid #CCCCCC;
    margin-top: 4px;
    margin-bottom: 4px;
}
.plot-scrollbar-thumb {
    background-color: #888888;
    border-radius: 4px;
    height: 8px;
    margin-top: 1px;
    margin-bottom: 1px;
    display: none;
    cursor: pointer;
}
iframe.tool {
    width: 700px;
    height: 400px;
    border: 1px solid black;
    resize:both;
    overflow: auto;
}