.sub_title_box {
    background-color: #cce5f7;
    padding: 30px 0;
}
.sub_title_box .sub_title{
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    font-size: 22px;
    font-weight: 800;
    color: #0d2b40;
}
.sub_title_box .sub_title .point2{
    font-size: 22px;
    font-weight: 800;
    color: #a3212a;
}
.contents {
    width: 100%;
    max-width: 1200px;
    margin: 40px auto 80px;
}
.contents .qna { 
    border: 1px solid #ddd;
    border-radius: 15px;
    margin-bottom: 20px;
}
.contents .qna .q{ 
    font-size: 18px;
    font-weight: 600;
    padding: 2rem 1rem;
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    line-height: 1.3;
    padding-right: 3rem;

}
.contents .qna.on .q{ 
    border-bottom: 1.5px solid #e6e6e6;

}
.contents .qna .q::after{ 
    content: '';
    background-image: url('../img/qna-arrow-down.png');
    background-size: contain;
    background-repeat: no-repeat;
    position: absolute;
    width: 20px;
    height: 20px;
    right: 1rem;
    top: 55%;
    transform: translateY(-50%);
}
.contents .qna.on .q::after{ 
    background-image: url('../img/qna-arrow-up.png');
}

.contents .qna.on .a { 
    font-size: 18px;
    display: block;
    padding: 1.5rem;
    background-color: #f5fbff;
    border-bottom-left-radius: 15px;
    border-bottom-right-radius: 15px;
    
}
.contents .qna .a { 
    display: none;
    line-height: 1.5;
}
@media screen and (max-width: 767px) {
    .sub_title_box {
        background-color: #cce5f7;
        padding: 20px 0;
    }
    .sub_title_box .sub_title {
        width: 90%;
        max-width: 100%;
        font-size: 20px;
        line-height: 1.3;
    }
    .contents {
        width: 90%;
        max-width: 100%;
        margin: 30px auto 80px;
    }
    .contents .qna .q {
        font-size: 16px;
    }
    .contents .qna.on .a {
        font-size: 16px;
    }
}