body{background-color: #ffffff;}
#lab {max-width: 1002px; width: 100%; margin: 0 auto; padding-top: 50px;}
img {width: 100%; vertical-align: bottom;}
a img:hover {opacity: 0.7;}

.photo {max-width: 902px; width: 88%; margin: 0 auto;}

footer .flex {display: flex; justify-content: space-between; margin-top: 20px;}
footer .flex div ul {display: flex;}
footer .flex div ul li {max-width: 100px; width: 100%; margin: 10px;}



@media screen and (max-width:750px) {
    #lab {padding-top: 30px;}
    footer .flex div ul li {max-width: 60px;}
}