.mainPanel { 
    min-width: 600px;
    min-height: 490px;
    border: 1px solid lightgray;
    box-shadow: none;
    padding: 0;
    margin: 0;
}
.canvasPanel {
    min-width: 600px;
    min-height: 490px;
}
.buttonBorder {
    border-color: lightgray;
}
.buttonPanel {
    min-height: 72px;
}
body {
    padding: 0;
    margin: 0;
}
.textToggleButton {
    width: 24px;
    height: 24px;
    box-sizing: content-box;
}