* {
	box-sizing: border-box;
}

html {
	margin: 0;
	padding: 0;
body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
}

main {
    display: grid;
    grid-template-rows: 15fr 1fr;
    height: 100vh;
    width: 100%;
}

.topbar {

}
.buttonbar {
    display: flex;
    justify-content: space-between;
    margin: 1rem;
}
#tags button {
    margin: 3px;
}

.editor-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

#preview-area {
    height: 100%;
    width: 100%;
}

#source {
    display: grid;
    grid-template-rows: 2fr 1fr;
}

textarea, iframe {
    flex: 1;
    padding: 10px;
    box-sizing: border-box;
    border: none;
    resize: none;
    font-family: monospace;
    font-size: 14px;
}

textarea {
    background-color: #fff;
    border-right: 2px solid #ccc;
}

iframe {
    background-color: #fff;
}