.u-center {
    display: flex;
    justify-content: center;
}
.u-center.column {
    flex-direction: column;
    justify-content: center;
}
.u-strong {
    font-weight: bold;
    color: #c61801;
    text-decoration: underline;
}
.u-margin20 {
    margin-top: 1.0em;
    margin-bottom: 1.0em;
}

.u-pagetitle {
    font-size: 4.0rem;
    padding-top: 1.0em;
}
.u-subtle {
    color: #8b9c89;
    font-size:0.8em;
}

p.u-center {
    text-align: center;
}

header {
    background-color: #4d412f;
    color: #eae8e2;
}
body {
    background-color: #fffdfa;
    color: #624e40;
    font-family: "Noto Sans JP", serif;
    font-style: normal;
    font-weight: 400;
    font-size:1.8em;
}
header .u-subtle {
    color: #d1ccc0;
    font-size:0.8em;
}

h1 {
    font-size: 3.0rem; padding-top: 1.0em;
    font-family: "Noto Sans JP", serif;
    font-optical-sizing: auto;
    font-weight: 500;
}
h2 {
    text-align:center;
    font-size: 2.4rem;
    padding-top: 0.5em;
    margin-bottom: 0.5em;
    position:relative;
    font-weight: 500;
    
}
h2::after {
    content: "";
    margin: 0 auto;
    display: block;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    
    background: #92654b;
}
h3 {
    font-size: 1.8rem;
    padding-top: 0.3em;
    padding-left: 0.5em;
    position:relative;
    font-weight: 400;
}
h3::before {
    content: "";
    margin: 0 auto;
    display: block;
    width:3px;
    height:1.5em;
    position:absolute;
    top:0.2em;
    left:-5px;
    background: #ebc49d; 
}
h4 { font-size: 1.5rem; padding-top: 0.3em;}


img {
    width: 80%;
}

img.u-icon {
    max-width: 15em;
    border-radius: 100%;
    border-color: #ead0bf;
    border-width: 3px;
    border-style: solid;
    padding: 1em;
    width: 30%;
    min-width: 150px;
}

.u-footnote {
    color: rgb(173, 173, 173);
    font-size: 0.9em;
}
.u-gray {
    color: gray;
}