/* 图片懒加载样式 */
img.lazy-load {
    opacity: 0;
    transition: opacity 0.3s ease-in;
}

img.lazy-load.loaded {
    opacity: 1;
}

/* 证书图片懒加载样式 */
.cert-img.lazy-load {
    opacity: 0;
    transition: opacity 0.3s ease-in;
}

.cert-img.lazy-load.loaded {
    opacity: 1;
}

/* 关于图片懒加载样式 */
.about-img.lazy-load {
    opacity: 0;
    transition: opacity 0.3s ease-in;
}

.about-img.lazy-load.loaded {
    opacity: 1;
}