.thumb_bd .thumb_cat { width: 321px; float: left; margin: 20px 8px 0;}
.thumb_bd li { list-style: none;}
.thumb_item { width: 96%; margin: 0 2% 30px; float: left;}
.thumb_item  img { width: 300px; height:200px; object-fit: cover;}

.thumb_hd { text-align: center; clear: both;}
.thumb_hd ul { display: inline-block;}
.thumb_hd li { cursor: pointer; float: left;  margin: 0 5px; width: 10px; height: 10px; border: 1px solid #ccc; border-radius: 50%; color: transparent; margin: 0 0.5em 0 0;}
.thumb_hd li.on { border: 1px solid #148fb9; background: #148fb9;}
.friend_links { width: 1400px; margin: 0 auto;}
.float_img_box { position: fixed; top: 200px; right: 10px; z-index: 30;}
.float_img_box li { margin-bottom: 10px;}
.float_img_box li img { width: 180px; border-radius: 5px; display: block; box-shadow: 0 0 5px #ccc;}