.edit-area .edit-area-item {
    display: none;
}

.edit-area:hover .edit-area-item {
    display: block;
}

.note-editor.note-airframe.fullscreen, .note-editor.note-frame.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100% !important;
    z-index: 1050;
    background-color: #fff;
}

.note-btn.dropdown-toggle:after {
    content: none;
}

.dropdown-menu > li > a {
    display: block;
    padding: 3px 20px;
    clear: both;
    font-weight: normal;
    line-height: 1.42857143;
    color: #333;
    white-space: nowrap;
}

.lesson-content .lesson-header-box {
    border: 6px solid #ffffff;
    margin-bottom: 13px;
    background-color: #fbfbfb;
}

.lesson-content .lesson-content-box {
    border: 5px solid #fff;
}

.lesson-content .tools {
    position: relative;
}

.lesson-content .tools-item {
    display: none;
    position: absolute;
    z-index: 999;
}

.lesson-content .tools:hover .tools-item {
    display: block;
}