.drag-drop {
            border: 2px dashed blue;
            padding: 20px;
            text-align: center;
            cursor: pointer;
            position: relative;
            height: 300px;
            background: linear-gradient(to bottom right, #b8dbd9, #99d3d1);
            color: white;
        }

        .drag-drop:hover {
            background: linear-gradient(to bottom right, #87b9b7, #6da7a5);
        }

        .drag-drop,
        .drag-drop * {
            color: black;
        }

        .preview-image {
            max-width: 100%;
            max-height: 150px;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        #converting-text {
            display: none;
            margin-top: 10px;
            font-weight: ;
            font-size: 20px;
            text-align: center;
        }

        @keyframes blink {
            50% {
                opacity: 0;
            }
        }

        .blink {
            animation: blink 1s step-end infinite;
        }

        .custom-download-btn {
            background-color: #007bff;
            border-color: #007bff;
            width: auto;
            border-width: 1px;
            border-radius: 5px;
            color: white;
            text-decoration: none;
            padding: 20px 60px;
            font-size: 24px;
            transition: background-color 0.3s ease;
            display: inline-block;
            margin-top: 20px;
        }

        .custom-download-btn:hover {
            background-color: #0056b3;
            color: white;
        }

        .alert-success {
            background-color: transparent !important;
            border-color: transparent !important;
        }