.site-banners{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:18px;padding:18px 20px;width:100%;box-sizing:border-box}.site-banner{width:100%;flex:0 1 auto;min-width:0}.site-banner a{display:block}.site-banner img{display:block;width:100%;height:auto;object-fit:contain;background:transparent}.site-banners-lesson_middle{padding:20px 0;margin:10px 0}