.main_item_content.about{display: inline-block;line-height: 28px;text-indent: 2em;font-size: 14px;}
.main_item_content.qualification{font-size: 0;margin-top: 30px;}
.qualification_item{display: inline-block;margin-right: 19px;}

.qualification_item:nth-of-type(5n){margin-right: 0;}
.qualification_item img{width: 150px;height: 150px;border-radius: 5px;border: 1px solid #ccc;cursor: pointer;}
.qualification_item:hover img{box-shadow:4px 4px 4px #0000004d;}
.qualification_item_title{text-align: center;font-size: 14px;color: #333;margin-top: 10px;}