.cat_exp_module_flex {
    position: relative;
    display: -webkit-flex;
    display: flex;
    -webkit-flex-wrap: wrap;
    flex-wrap: wrap;
    -webkit-justify-content: space-between;
    justify-content: space-between;
    max-width: 1200px;
}

.cat_exp_module_flex .item {
    position: relative;
    box-sizing: border-box;
    /* -webkit-flex: 1 0 50%; */
    /* -ms-flex: 1 0 50%; */
    /* flex: 1 0 50%; */
    /* max-width: 600px; */
    min-width: 280px;
    padding: 10px;

    flex: 1 1 calc(50% - 10px);
    max-width: 50%; 
}

@media all and (max-width: 650px) {
    .cat_exp_module_flex .item {
        max-width: 100% !important;
    }
}

.cat_exp_module_flex .block {
    box-shadow: 0px 0px 0px 1px #CCC;
    overflow: hidden;
}

.cat_exp_module_flex .block:hover {
    box-shadow: 0px 0px 9px 1px #CCC;
}