#drag_bar {
    width: 100%;
    height: 10px;
    background: linear-gradient(to center, #f9f9f9, #d0d0d0, #f9f9f9);
    cursor: ns-resize;
    position: absolute;
    bottom: -5px;
    left: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}
#drag_bar:before {
    content: '';
    width: 50px;
    height: 4px;
    background-color: #888;
    border-radius: 2px;
}

.drag_container {
    position: relative;
}