.loader {
    display: none;
    width: 100%;
    height: 100%;
    position: fixed;
    z-index: 1000;
    top: 0;
    left: 0;
    text-align: center;
    background: rgba(255, 255, 255, 0.8);
}

    .loader::after {
        content: "";
        display: inline-block;
        width: 65px;
        height: 65px;
        border: 5px solid #ccc;
        border-top-color: red; /* 轉圈圈的顏色改為紅色 */
        border-radius: 50%;
        animation: spin 1s linear infinite;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }

    .loader h2 {
        color: #444;
        font-size: 16px;
        position: absolute;
        top: 65%; /* 調整文字位置 */
        left: 50%;
        transform: translate(-50%, -50%);
        margin: 0;
    }

body.loading {
    overflow: hidden;
}

    body.loading .loader {
        display: block;
    }

@keyframes spin {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}