css/custom.css

#yml_code {
    height: 600px;
    flex-grow: inherit;
    overflow-y: auto;
}

#json_code {
    height: 600px;
    flex-grow: inherit;
    overflow-y: auto;
}

#gpu_code {
    height: 300px;
    flex-grow: inherit;
    overflow-y: auto;
}