body {
    font-family: 'Arial', sans-serif;
    background-color: #f0f0f0;
    margin: 0;
}

.container {
    max-width: 800px;
    margin: 20px auto;
    background-color: #fff;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#drop-area {
    border: 2px dashed #ccc;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    margin-bottom: 20px;
    cursor: pointer;
}

#drop-area p {
    margin: 0;
    font-size: 16px;
    color: #333;
}

#drop-area.drag-over {
    background-color: #f0f8ff; /* LightSkyBlue */
}

#image-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.image-item {
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}

.image-principale {
    width: 100%;
    height: auto;
    display: block;
}

.filtre {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('chemin/vers/votre/filtre.png') center center no-repeat;
    background-size: 50%;
    opacity: 0.5;
}

.url-container {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 5px;
    text-align: center;
    font-size: 12px;
}

#btnTelecharger {
    padding: 10px;
    font-size: 16px;
    cursor: pointer;
    background-color: #4caf50;
    color: #fff;
    border: none;
    border-radius: 5px;
}

#btnTelecharger:disabled {
    background-color: #ddd;
    color: #666;
    cursor: not-allowed;
}