html,body{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

.must-icon{
    position: relative;
}
.must-icon::after {
	content: "必須";
    display: inline-block;
	color: #fff;
    background-color: #dc355c;
	padding: 0.1rem 0.4rem;
    margin-left: 0.4rem;
	font-size: 0.7rem;
    border-radius: 6px;
    vertical-align: text-top;
}


.accordion::after{
    content: '';
    /* color: #fff; */
    position: absolute;
    width: 100%;
    height: 100%;
    top: 60%;
    background-image: url(../assets/images/icon-underline.webp);
    background-size: contain;
    background-repeat: no-repeat;
    vertical-align: middle;
}

.accordion.open::after{
    content: '-';
}

@media only screen and (max-width: 480px){
.accordion::after{
    width: 100%;
    height: 100%;
    top: 73%;
}
}