.find_section
{
    background-image: url('../images/mm.jpg');
    background-repeat: repeat;
    border: 1px solid #A9A9A9;
}
    .find_section >a {
        display: block;
        width: 140px;
        height: 200px;
        overflow: hidden;
        padding: 5px 0px;
        text-align: center;
        vertical-align: middle;
        float: left;
        color: #000;
        text-decoration: none;
        /*border: 2px solid #FFF;*/
        margin: 13px;
    }

     .find_section >a:hover {
       background-color: #c7d1d6;
    }

    .find_section >a img {
        box-shadow: 3px 3px 5px 1px #777;
        margin: 6px;
        width: 90%;
    }
    
    .find_section >a:nth-child(3n-1)>img
    {
        -moz-transform: rotate(2deg);  /* Firefox */
        -o-transform: rotate(2deg);  /* Opera */
        -webkit-transform: rotate(2deg);  /* Safari y Chrome */
    }
    
    .find_section >a:nth-child(4n)>img
    {
        -moz-transform: rotate(-2deg);  /* Firefox */
        -o-transform: rotate(-2deg);  /* Opera */
        -webkit-transform: rotate(-2deg);  /* Safari y Chrome */
    }