:root {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: unset;
}

main {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    height: 100dvh;
    overflow: hidden;
}

.codeview {
    width: 100%;
    height: 100%;
    background: #333;
}

.codeview>#editor {
    height: 100%;
}

.mdview {
    height: 100%;
}

iframe {
    width: 100%;
    height: 100%;
    border: none;
}