.container {
     width: 60%;
     margin: 10% auto 0;
     background-color: #f0f0f0;
     padding: 2% 5%;
     border-radius: 10px
 }

 .footer {
     position: fixed;
     bottom: 0;
     width: 100%;
     line-height: 50px;
     text-align: center;
     background-color: rgb(40, 40, 40);
     color: #333;
 }

 .img_item {
     width: 200px;
     height: auto;
     margin-right: 10px;
 }