html,body{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    overflow-x: hidden;
    scroll-behavior: smooth;
    font-size: 95%;
    font-family: fot-tsukuardgothic-std, sans-serif;
}

.font-serif{
    font-family: fot-tsukuaoldmin-pr6n, sans-serif;
}

input,select,textarea,button{
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

input[type="radio"],
input[type="checkbox"]{
    -webkit-appearance: auto;
    -moz-appearance: auto;
    appearance: auto;
}


.absolute-center{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}


.must-icon{
    position: relative;
}
.must-icon::after {
	content: "必須";
    display: inline-block;
	color: #fff;
    background-color: red;
	padding: 0.1rem 0.4rem;
    margin-left: 0.4rem;
	font-size: 0.7rem;
    border-radius: .2rem;
}