.tatjsInput, .tatjsOutput {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    font-family: monospace;
    width: 100%;
}

.tatjsOutput {
    height: calc(100vh - 40px);
    vertical-align:top;
    white-space: pre;
}