.sub_menu {
    padding: 0 0 0 30px;
    margin: 0;
    list-style: none;
}

.sub_menu li {
    display: block;
    position: relative;
    font-size: 24px;
    line-height: 40px;
    margin-bottom: 15px;
    transition: all .5s;
}

.sub_menu li:before {
    content: "\f105";
    font-family: fontawesome;
    position: absolute;
    left: -30px;
    top: 0;
    color: #787878;
    transition: all .5s;
}

.sub_menu li:hover:before, .sub_menu li:active:before, .sub_menu li:focus:before {
    color: #333;
}

.sub_menu li a {
    color: #787878;
    text-decoration: none;
}

.sub_menu li a:hover, .sub_menu li a:active, .sub_menu li a:focus {
    color: #333;
    text-decoration: none;
}
.detail_page {
    font-size: 16px;
    line-height: 22.4px;
}

    .detail_page ul {
        max-width: 800px;
        padding-left: 20px;
        margin-bottom: 30px;
    }

        .detail_page ul li {
            list-style: circle;
            margin-bottom: 10px;
        }

    .detail_page p {
        max-width: 800px;
    }

.video {
    height: 0;
    position: relative;
    padding-bottom: 56.25%;
}

    .video iframe {
        position: absolute;
        left: 0;
        top: 0;
        width: 50%;
        height: 50%;
    }

.contacts_a_mail, .contacts_a_phone {
    display: inline-block;
    position: relative;
    color: #333;
    padding-left: 30px;
    font-weight: bold;
    margin-bottom: 5px;
}

    .contacts_a_mail:before, .contacts_a_phone:before {
        font-family: fontawesome;
        color: #333;
        position: absolute;
        left: 0px;
    }

    .contacts_a_mail:before {
        content: '\f003';
    }

    .contacts_a_phone:before {
        content: '\f095';
    }

    .contacts_a_mail:hover, .contacts_a_phone:hover, .contacts_a_mail:active, .contacts_a_phone:active, .contacts_a_mail:focus, .contacts_a_phone:focus {
        color: #06966E;
        text-decoration: none;
    }

.picture_block {
    display: flex;
    flex-flow: row wrap;
    justify-content: flex-start;
}

.picture_item {
    padding: 15px;
    text-align: center;
}

    .picture_item a {
        display: block;
        margin-bottom: 15px;
    }

    .picture_item span {
        margin: 15px 0 0 0;
    }

    .picture_item img {
        display: block;
        width: 100%;
    }

@media (min-width: 320px) {
    .picture_item {
        width: 100%;
        margin-bottom: 30px;
    }
}

@media (min-width: 400px) {
}

@media (min-width: 640px) {
    .picture_item {
        width: 50%;
        margin-bottom: 30px;
    }
}

@media (min-width: 1024px) {
    .picture_item {
        width: 33.333%;
        margin-bottom: 30px;
    }
}

@media (min-width: 1280px) {
}

@media (min-width: 1590px) {
}

@media (min-width: 1800px) {
}