.faq_item {
    display: block;
    width: 100%;
    background-color: #e6e6e6;
    border-top: 1px solid #c9c9c9;
    box-sizing: border-box;
    padding: 0 20px;
    position: relative;
    cursor: pointer;
}

.faq_item:before {
    content: "";
    display: block;
    width: 19px;
    height: 19px;
    margin-right: 10px;
    background-image: url(https://www.flexnet.co.jp/images/common/icon_question.svg);
    background-size: cover;
    position: absolute;
    left: 20px;
    top: 33%;
}
.faq_item:after {
    content: "";
    display: block;
    width: 12px;
    height: 12px;
    border-top: 2px solid #0055b8;
    border-right: 2px solid #0055b8;
    -webkit-transform: rotate(135deg);
    transform: rotate(135deg);
    position: absolute;
    right: 22px;
    top: 30%;
    transition: all 0.2s ease-in-out;
    transform-origin: center;
}

.faq_question {
    font-size: 1em;
    font-weight: bold;
    line-height: 1.5;
    padding: 18px 25px 18px 30px;
}

.faq-answer {
    display: block;
    box-sizing: border-box;
    padding: 30px 50px;
    line-height: 1.7;
}