index.css

body {
    margin: 0;
    max-width: 100vw;
}

pre, code {
    overflow: auto;
}

#pageContainer {
    display: flex;
    width: 100%;
    max-width: 100vw;
    height: 100vh;
}

#blocklyDiv {
    flex-basis: 100%;
    height: 100%;
    min-width: 600px;
}

#outputPane {
    display: flex;
    flex-direction: column;
    width: 400px;
    flex: 0 0 400px;
    overflow: auto;
    margin: 1rem;
}

#generatedCode {
    height: 50%;
    background-color: rgb(247, 240, 228);
}

#output {
    height: 50%;
}