.ace_editor {
    position: relative !important;
    border: 1px solid lightgray;
    margin: auto;
    height: 200px;
    width: 80%;
}

.ace_editor.fullScreen {
    height: auto;
    width: auto;
    border: 0;
    margin: 0;
    position: fixed !important;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 10;
}