body {
    margin: auto;
    max-width: 640px;
    background-color: white;
    color: black;
}

.noscriptWarning {
    background-color: red;
    color: white;
}

.noscriptWarning a {
    color: white;
}

span.returnSymbol {
    background-color: black;
    color: white;
    border-radius: 4px;
}

span.endSymbol {
    background-color: green;
    color: white;
    border-radius: 4px;
}

.tegami {
    border: 1px solid;
    display: inline-block;
}

.outputTextArea {
    width: 100%;
    height: 32em;
}