#canvas-container {
    position: relative;
    margin: 20px auto;
    border: 1px dashed #ccc;
    background: #f9f9f9;
    overflow: hidden;
    width: 100%;
    max-width: 600px;
    min-height: 200px;
}

#image-canvas {
    display: block;
    max-width: 100%;
    height: auto;
}

.selection {
    position: absolute;
    border: 2px dashed #007bff;
    background-color: rgba(0, 123, 255, 0.1);
    cursor: move;
}

.resizer {
    width: 14px;
    height: 14px;
    background: #007bff;
    border: 3px solid white;
    border-radius: 50%;
    position: absolute;
    bottom: -7px;
    right: -7px;
    cursor: se-resize;
}

.d-none {
    display: none;
}