@media screen and (min-width: 721px) {
    .card {
        width: 460px;
        margin-left: auto;
        margin-right: auto;
        background-color: #fff;
    }
}
@media screen and  (max-width: 720px){
    .card {
        width: 100%;
        margin-left: auto;
        margin-right: auto;
        background-color: #fff;
    }
}

/* 基本レイアウト */
p {font-size: 15px;}

.mgnA {margin-left: auto;margin-right: auto;}
.bold {font-weight: bold;}
.small {font-size: 0.75em;}
.big {font-size: 1.25em;}
.big2 {font-size: 1.5em;}
.enred {color: #f22;}
.encent {text-align: center;}
.enleft {text-align: left;}
.enright {text-align: right;}
.txt-re {color: #ff0000;}
.mgnt10 {margin-top: 0.75em;}
.mgnt15 {margin-top: 1em;}
.mgnt30 {margin-top: 0.1.5em;}
.iconBtn {text-align: center;padding-top: 6px;}
.iconBtn span {font-size:10px;}


nav {
    position: fixed;
    top:0;
    z-index: 9999;
    width: 100%;
}
.shrink-0 {
    padding-right: 2em;
}
@media screen and  (max-width: 321px){
    .shrink-0 {padding-right: 0.25em;}
    .shrink-0 img {width:64px;}
}

.justify-between {
    justify-content: space-around;
}

main {margin-top: 64px;}
.guest main {margin-top: 0px;}

.guest-header {padding: 1.5em;background-color:rgb(165, 212, 104);width:100%;height:auto;}

.card-header {
    padding: 0.5em;
}
.card .inner {
    width: 90%;
    margin-left: auto;
    margin-right: auto;
    background-color: #fff;
}
.card h2 {
    font-size: 24px;
    font-weight: 600;
    padding: 0.5em;
    text-align: center;
    background-image: url('../img/bg_sha.gif');
    background-repeat: repeat;
}

.card-header h3{
    font-size: 18px;
    padding: 0.5em;
}
.card {padding-bottom: 2em;}

.menuBtn a {
    font-size: 18px;
    color: #fff;
    display: block;
    /* width: 80%; */
    background-color: #0b2657;
    padding: 1em 2em;
    margin-top: 1em;
    border-radius: 7px;
}

.BackLink {
    text-align: center;
    background-color: #2261bf;
    padding: 0.75em 1em;
}
.BackLink a {
    font-size:1.5em;
    display: block;
    align-items: center;
    background-color: #2261bf;
    border-radius: 10px;
    color: #fff;
    padding: 10px var(--inner-space-side);


}
p.not_mb_mesg {
    padding: 1em;
    font-size: 18px;
}

#backBtn {
        padding: 0.75em;
        position: fixed;
        left: 5px;
        bottom:15px;
        border-radius: 15px;
        color:#fff;
        background-color: rgb(31 59 197);
        background-color: #0b2657;
}
#footer {
    padding: 1em;
    color:#fff;
    background-color: rgb(15 55 126);
    text-align: center;
}


/* ログインページレイアウト */
.toparea {
	margin-left: auto;
	margin-right: auto;
	width: 40%;
	padding: 30px 0;
	background: #ececec;
	box-shadow: 1px 1px 5px #888;
	border-radius: 10px;
	min-height: 80vh;
}
@media screen and (max-width:750px){
    .toparea {
        margin-left: auto;
        margin-right: auto;
        width: 100%;
        padding: 30px 0;
        background: #ececec;
        box-shadow: 1px 1px 5px #888;
        border-radius: 10px;
    }

}