style.css

html {
    background-color: black;
    padding: 0;
    margin: 0;
    height: 100%;
    width: 100%;
}

#title, h1 {
    color: grey;
}

#chatty, canvas {
    margin: 0 auto;
    padding: 8px;
    border: 2px solid white;
    background: darkgrey;
    position: relative;
}

.post {
    border: 1px solid grey;
    height: 16px;
    width: 16px;
    border-radius: 8px;
    background-color: blue;
    position: absolute;
    cursor: pointer;
    text-align: center;
    vertical-align: middle;
    font-size: 8px;
}

.reply {
    border: 1px solid grey;
    height: 8px;
    width: 8px;
    border-radius: 4px;
    background-color: black;
    position: absolute;
    z-index: 2;
}

.line {
    border: 1px solid blue;
    position: absolute;
}

.preview {
    width: 400px;
    font-size: 75%;
    background-color: black;
    border: 1px solid white;
    color: grey;
    position: relative;
    margin-top: 32px;
    padding: 2px;
    z-index: 1;
    cursor: auto;
    display: none;
}

#preview {
    background-color: #333;
    width: 800px;
    padding: 8px;
    margin: 8px auto;
    color: lightgray;
}

#preview_author {
    font-weight: bold;
    color: white;
    padding-right: 8px;
}

#preview_date {
    font-style: italic;
}

form {
    color: grey;
}