.about_bg{
    background-image: url(../img/about_sub_bg.jpg);
    background-attachment: fixed;
    background-position-y: -50px;
    background-repeat: no-repeat;
    background-size: cover;
    width: 100%;
    height: 760px;
}
.about_brand{
    width: 100%;
    background-color: #eee;
}
.about_brand h1{
    font-family: 'Vitro_core';
    position: absolute;
    font-size: 70px;
    top: -50px;
    left: 0;
    color: #ffa200;
}
.about_brand .about_box{
    width: 1200px;
    margin: 0 auto;
    display: flex;
    /* 행기준 줄바꿈 허용 */
    flex-flow: row wrap;
    justify-content: space-between;
    position: relative;
}
.about_brand h1{
    font-family: 'Vitro_core';
    position: absolute;
    font-size: 70px;
    top: -50px;
    left: 0;
    color: #ffa200;
}
.about_brand .about_box .about1{
    order: 1;
    width: 50%;
    margin-top: 150px;
}
.about_brand .about_box .about2{
    order: 2;
    width: 40%;
    padding: 100px 0;
    margin-top: 150px;
}
.about_brand .about_box .about3{
    order: 3;
    width: 30%;
    padding: 80px 0;
    margin: 100px 0;
}
.about_brand .about_box .about4{
    order: 4;
    width: 60%;
    margin: 100px 0;
}
.about_brand .about_box h2{
    font-size: 40px;
    color: #36bac6;
}
.about_brand .about_box p{
    line-height: 25px;
    font-size: 16px;
    color: #666;
    margin-top: 30px;
}
.about_brand svg{
    width: 0;
    height: 0;
    margin-top: 50px;
}
.clip1{
    position: relative;
    animation: border_ani1 5s infinite linear;
    /* 애니메이션 실행방향: 반대방향<->순방향 */
    /* animation-direction: alternate-reverse; */
}
@keyframes border_ani1{
    0%{
        clip-path: polygon(0% 5%, 95% 0, 100% 90%, 5% 100%);
    }
    25%{
        clip-path: polygon(5% 0%, 95% 5%, 95% 90%, 5% 95%);
    }
    50%{
        clip-path: polygon(0% 10%, 90% 0%, 100% 80%, 0 90%);
    }
    75%{
        clip-path: polygon(10% 5%, 85% 10%, 100% 90%, 5% 100%);
    }
    90%{
        clip-path: polygon(0% 5%, 100% 0, 95% 90%, 0 100%);
    }
    100%{
        clip-path: polygon(0% 5%, 95% 0, 100% 90%, 5% 100%);
    }
}
.clip2{
    position: relative;
    animation: border_ani2 5s infinite linear;
}
@keyframes border_ani2{
    0%{
        clip-path: polygon(0% 5%, 95% 0, 90% 90%, 5% 95%);
    }
    25%{
        clip-path: polygon(10% 0%, 90% 5%, 90% 85%, 5% 90%);
    }
    50%{
        clip-path: polygon(5% 10%, 90% 0%, 90% 95%, 0 85%);
    }
    75%{
        clip-path: polygon(0% 0%, 95% 5%, 95% 90%, 5% 90%);
    }
    90%{
        clip-path: polygon(5% 5%, 95% 0, 90% 90%, 0 95%);
    }
    100%{
        clip-path: polygon(0% 5%, 95% 0, 90% 90%, 5% 95%);
    }
}


.about_icon{
    width: 100%;
}
.about_icon ul{
    width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-flow: row wrap;
    justify-content: space-between;
    position: relative;
    padding-top: 100px;
}
.about_icon ul h1{
    font-size: 50px;
    color: #ff5e44;
    text-align: center;
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'Vitro_core';
}
.about_icon ul li{
    width: 33%;
    padding: 0 130px;
    box-sizing: border-box;
    border-right: 1px solid #ddd;
    margin-bottom: 100px;
    display: flex;
    flex-flow: column nowrap;
    justify-content: center;
    align-items: center;
}
.about_icon ul li:nth-last-child(3n+1){
    border:none
}
.about_icon ul li:nth-child(6) img{
    width: 160px;
}
.about_icon ul li:nth-child(6) p{
    margin-top: 30px;
}
.about_icon ul li p{
    white-space: nowrap;
    text-align: center;
    font-weight: bold;
}

/* 노트북 : max-width:1600px */
@media screen and (max-width:1280px){
    .about_bg{
        height: 500px;
        background-position-y: -200px;
    }
    .about_brand .about_box{
        width: 1000px;
    }
    .about_brand .about_box p{
        line-height: 24px;
        font-size: 14px;
        white-space: nowrap;
    }
}
/* 태블릿 : max-width:1024px, max-width: 768px */
@media screen and (max-width:1024px){
   
}
@media screen and (max-width:768px){
    .about_bg{
        height: 400px;
        background-position-y: -300px;
    }
    .about_brand .about_box{
        width: 80%;
    }
    .about_brand h1{
        font-size: 40px;
        top: -20px;
        left: 50%;
        transform: translatex(-50%);
        white-space: nowrap;
    }
    .about_brand .about_box p{
        line-height: 24px;
        font-size: 14px;
        white-space: nowrap;
    }
    .about_brand .about_box{
        flex-flow: column nowrap;
    }
    .about_brand .about_box .about1{
        order: 1;
        width: 100%;
        margin-top: 50px;
    }
    .about_brand .about_box .about2{
        order: 2;
        width: 100%;
        padding: 0;
        margin-top: 30px;
        text-align: center;
    }
    .about_brand .about_box .about3{
        order: 4;
        width: 100%;
        padding: 0;
        margin-top: 30px;
        text-align: center;
    }
    .about_brand .about_box .about4{
        order: 3;
        width: 100%;
        margin-top: 50px;
        margin-bottom: 0;
    }
    .about_brand .about_box h2{
        font-size: 50px;
    }
    .about_brand .about_box p{
        line-height: 30px;
        font-size: 20px;

    }
    .clip1{
        animation: none;
    }
    .clip2{
        animation: none;
    }
    .about_icon ul{
        width: 80%;
        margin: 0 auto;
        padding: 100px 0;
    }
    .about_icon ul li{
        width: 48%;
        height: 300px;
        padding: 0 60px;
        border-right: none;
        border-radius: 10px;
        background-color: #f8f8f8;
        margin-bottom: 30px;
    }
}
@media screen and (max-width:480px){
    .about_bg{
        height: 300px;
        background-position-y: -200px;
    }
    .about_brand .about_box{
        width: 94%;
    }
    .about_brand h1{
        font-size: 30px;
        top: -25px;
    }
    .about_brand svg{
        margin-top: 0;
    }
    .about_brand .about_box .about1{
        margin-top: 30px;
    }
    .about_brand .about_box h2{
        font-size: 30px;
    }
    .about_brand .about_box p{
        line-height: 24px;
        font-size: 14px;
    }
    .about_icon ul h1{
        font-size: 30px;
        top: -20px;
    }
    .about_icon ul li{
        height: 200px;
        padding: 0 30px;
        margin-bottom: 30px;
    }
    .about_icon ul li:nth-child(6) img{
        width: 100px;
    }
    .about_icon ul li p{
        font-size: 10px;
    }
}