.m {
    margin: 50px;
}

.mt-3 {
    margin-top: 3rem;
}

.is_section-padding h4 {
    text-align: center;
    margin: 4rem 0 2.5rem;
}

.p1 {
    line-height: 50px;
    font-weight: 600;
    font-size: 20px;
}

.p_b1 {
    color: #36adf9;
    font-size: 24px;
    padding: 2rem 0;
}

.m_r {
    margin-right: 15px;
}

.m_l {
    margin-left: 15px;
}

.content {
    width: 100%;
    margin-top: 110px;
}

.page_top {
    height: 338px;
}

.is_ban {
    background: url(../images/is_banner.png)no-repeat;
}

.is_list li {
    list-style: url(../images/cg_ia_li.png);
    padding: 8px 0 8px 10px;
}

.is_list2>li {
    /* float: left; */
    width: 100%;
    background: url(../images/cg_dot.png) left center no-repeat;
    line-height: 30px;
    padding-left: 15px;
    margin: 5px 62px 5px -22px;
}


/*頁籤*/

.con-tab01 {
    margin: 0 auto;
    text-align: center;
    font-size: 20px;
    padding-top: 52px;
}

a.active {
    color: #36adf9;
    border-bottom: 1px #36adf9 solid;
    padding: 0px 5px 5px 5px;
}

a.con-tab01 {
    color: #a5a5a5;
    margin: 0px 15px;
}

a.con-tab01:hover {
    color: #36adf9;
}


/*總覽*/

.is_section {
    display: flex;
    justify-content: center;
}

.is_box {
    background: #1c528e;
    padding: 0;
    margin: 0 1rem;
    position: relative;
}

.is_box a {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem 0;
}

.is_box_img {
    width: 120px;
    height: 150px;
}

.is_box_caption {
    background: #36adf9;
    width: inherit;
    padding: 1rem 0;
}

.is_box_caption_h {
    font-size: 1.25em;
    color: #fff;
}


/* 區塊滑入效果 */

.is_box:hover {
    background: #36adf9;
    position: relative;
    transition: all .4s ease-in-out;
}


/* .is_box::before,.is_box::after{
  opacity: 0;
} */

.is_box_link::before {
    content: '';
    top: 8%;
    right: 10%;
    bottom: 8%;
    left: 10%;
    border-right: 1px solid #fff;
    border-left: 1px solid #fff;
    position: absolute;
    opacity: 0;
}

.is_box_link:hover ::before {
    content: '';
    top: 8%;
    right: 10%;
    bottom: 8%;
    left: 10%;
    border-right: 1px solid #fff;
    border-left: 1px solid #fff;
    position: absolute;
    opacity: 1;
    transition: all .3s linear;
}

.is_box_link::after {
    content: '';
    top: 8%;
    right: 10%;
    bottom: 8%;
    left: 10%;
    border-top: 1px solid #fff;
    border-bottom: 1px solid #fff;
    position: absolute;
    opacity: 0;
}

.is_box_link:hover ::after {
    content: '';
    top: 8%;
    right: 10%;
    bottom: 8%;
    left: 10%;
    border-top: 1px solid #fff;
    border-bottom: 1px solid #fff;
    position: absolute;
    opacity: 1;
    transition: all .3s linear;
}

@media screen and (max-width:991px) {
    .is_section {
        flex-direction: column;
        align-items: center;
    }
    .is_box {
        margin-top: 3rem;
        width: 60%;
    }
}

@media screen and (min-width: 320px) and (max-width: 768px) {
    .is_ban {
        background: url(../images/is_banner.png)no-repeat -360px;
    }
}

@media screen and (max-width:320px) {
    .con-tab01 {
        display: flex;
        display: -webkit-flex;
        /*webkit*/
        align-items: baseline;
    }
}