html, body {
    padding: 0;
    margin: 0;
    background: #4c4a4c;
}

.main-container {
    text-align: center;
    padding-bottom: 60px;
}

#previewFrame {
    background: #fff;
}

.bottom-bar {
    position: fixed;
    bottom: 0;
    width: 100%;
    height: 50px;
    background: #dcdadc;
    text-align: center;
}

.bottom-bar label[for="preview-mode-select"] {
    margin: 0 20px;
    height: 50px;
    line-height: 50px;
}

.bottom-bar .preview-mode-select {
    display: inline-block;
    width: 200px;
    margin: 0 10px;
}

.bottom-bar .custom-panel {
    display: inline-block;
    background: #fff;
    border: 1px solid #777;
    padding: 5px;
    margin: 5px 20px 5px 5px;
}

.bottom-bar .custom-panel .custom-width,
.bottom-bar .custom-panel .custom-height {
    width: 60px;
    height: 20px;
    text-align: center;
    margin: 2px 5px;
}

.bottom-bar .custom-panel .custom-size-btn {
    background: #31a2de;
    color: #fff;
    height: 24px;
    margin-top: -2px;
    margin-left: 5px;
}

#preview-mode-lang {
    margin-left: 10px;
}