#showPreviewCode,
#importPreviewCode {
    position: absolute;
}

#showPreviewCode {
    right: 220px;
    background: lightgreen;
}
#importPreviewCode {
    right: 20px;
}
#btn-save {
    background: lightgreen;
}
#btn-cancel {
    background: lightcoral;
}
#btn-del {
    background: black;
    color: white;
}
button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}