.diagram-container {
    position: relative;
}


.diagram-area {
    position: absolute;
    border: 2px dashed red;
    cursor: move;
    background-color: rgba(255, 0, 0, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
}

.diagram-area .remove-btn {
    position: absolute;
    top: 0;
    right: 0;
    background-color: red;
    color: white;
    border: none;
    cursor: pointer;
    padding: 1px 4px;
    font-size: 10px;
}