main section{
    display: flex;
    justify-content: space-between;
    margin: 0 auto;
    width: 1100px;
}
@media only screen and (max-width: 768px){
    main section{
        display: block;
        margin: 0 auto;
        padding: 0;
        width: 99%
    }
}

main section .faqList{
    width: 25%;
}
@media only screen and (max-width: 768px){
    main section .faqList{
        margin: 20px 0 30px 0;
        width: 100%;
    }
}

main section .faqList ul{
    position: sticky;
    top: 80px;
   background-color: #f6f3f1;
}
@media only screen and (max-width: 768px){
    main section .faqList ul{
        position:static;
    }
}

main section .faqList li + li{
        border-top: 1px dotted #ccc;
    }

main section .faqList li a{
    display: block;
    padding: 20px 10px;
    text-decoration: none;
    line-height: 1.5;
}
main section .faqList li a:hover{
    background-color: #d1c5b9;
}

main section .faqList li a:before {
  content: '\e5cc';
  font-family: 'Material Icons';
}

main section .faqBox{
    width: 70%;
}
@media only screen and (max-width: 768px){
    main section .faqBox{
        width: 100%;
    }
}

main section .faqBox h3{
    margin: 0 0 20px 0;
    padding: 19px 30px;
    background-color: #f6f3f1;
    color: #3a2a11;
    position: relative;
    font-family: "ヒラギノ明朝 ProN W3", "Hiragino Mincho ProN", "游明朝", YuMincho, serif;
    font-size: 1.8rem;
    font-weight: 400;
    line-height: 160%;
}

main section .faqBox h3:before{
content: "";
    display: block;
    width: 10px;
    height: 100%;
    background-color: #d1c5b9;
    position: absolute;
    left: 0;
    top: 0;
}

main section dl{
    margin: 0 0 60px 0;
    padding: 0 28px;
}

main section dt{
    margin: 0 0 10px 0;
    font-weight: bold;
}

main section dd{
    margin: 0 0 30px 0; 
    padding: 0 0 30px 0;
    border-bottom: 1px solid #ddd;
}