.video_open {
    opacity: 1;
}

.video_close {
    opacity: 0;
    transition: opacity 1000ms;
}


.note {
    position: absolute;
    display: flex;
    flex-direction: column;
    z-index: 9;
    background-color: #f1f1f1;
    border: 1px solid #d3d3d3;
    transition: height 2s;
    width: 304px;
}

.noteheader {
    position: relative;
    cursor: default;
    width: 100%;
    padding-top: 5px;
    z-index: 10;
    background-color: rgba(0, 0, 0, 0.9);
    color: #fff;
}

.noteheader .bx:hover {
    background-color: rgba(100, 100, 100, 0.5);
    cursor: pointer;
}

.notebody {
    max-height: 400px;
    position: relative;
    word-wrap: break-word;
    overflow: auto;
    color: #000;
}

@keyframes example {
    0% {
        /* box-shadow: 0px 0px 8px red; */
        background-color: rgba(0, 0, 0, 0.9);
    }

    50% {
        /* box-shadow: 0px 0px 22px rgb(0, 255, 76); */
        background-color: rgba(0, 255, 76, 0.9);
    }

    100% {
        /* box-shadow: 0px 0px 8px red; */
        background-color: rgba(0, 0, 0, 0.9);
    }
}

.window_alert {
    animation: example 2s infinite;
}

.tree_item {
    cursor: pointer;
    height: 70px;
    width: 70px;
    background-size: cover;
}

.tree_item:hover {
    box-shadow: inset 0px 0px 8px rgba(0,0,0,0.1);
}