@font-face {  
  font-family: '阿里妈妈数黑体';  
  src: url('./AlimamaShuHeiTi/AlimamaShuHeiTi-Bold.woff2') format('woff2'),  
       url('./AlimamaShuHeiTi/AlimamaShuHeiTi-Bold.woff') format('woff'),
    url('./AlimamaShuHeiTi/AlimamaShuHeiTi-Bold.ttf') format('truetype');  
  font-weight: normal;  
  font-style: normal;  
}  

/* 手机设备 (小于768px) */
@media screen and (max-width: 767px) {
    .app-item {
        width:100% !important;
    }
}