html, body {
    font-family: "Arial", "メイリオ";
    line-height: 1.7em;
}

table{
    border-collapse:  collapse;
    margin: auto;
    border: 1px solid #ddd;
    white-space: nowrap;
}

tr:nth-child(odd){
    background-color:  #eee;
}

th{
    padding: 5px 10px;
    background-color:  #ddd;
    text-align: left;
}

td{
    padding: 5px 10px;
}

.table_wrapper{
    overflow-x: scroll;
}

.pic{
    display: block;
    margin: auto;
    width: min(600px, 100%);
    height: auto;
}

.pic2{
    width: max(45%, min(90vw, 300px));
    height: auto;
}

.pic3{
    width: max(30%, min(90vw, 250px));
    height: auto;
}

.box{
    width: min(1000px, 95vw);
    text-align: start;
    margin: 0 auto;
}

h1{
    text-align: center;
    line-height: 1.3em;
}

h2{
    text-align: center;
    background-color:  #8dc5ac;
    margin-top: 5%;
    padding: 0.2em;
    line-height: 1.3em;
}

h3{
    text-align: center;
    background-color:  #cbc5de;
    padding: 0.1em;
    line-height: 1.3em;
}

h4{
    text-align: center;
    line-height: 1.3em;
}

.h3_left{
    font-size: larger;
    font-weight: bold;
    text-align: left;
}

.menu_bar{
    width: 100%;
    height: min(9vw, 60px);
    background-color:  #2a7253;
    display: flex;
    align-items: center;
}

.menu_a{
    text-decoration: none;
    height: 100%;
    color: white;
    display: table-cell;
    vertical-align: middle;
}

.menu_button{
    width: min(20vw, 130px);
    height: min(9vw, 60px);
    background-color:  #2a7253;
    display: inline-block; 
    text-align: center;
    display: table;
    vertical-align: middle;
    font-size: min(2.5vw, 12pt);
    line-height: 1.0em;
}

.centering_box{
    width: 100%;
    text-align: center;
}

code {
    display: inline-block;
    padding: 0.1em 0.25em;
    color: #444;
    background-color: #e7edf3;
    border-radius: 3px;
    border: solid 1px #d6dde4;
    font-family: Consolas, Menlo, Monaco, -apple-system, BlinkMacSystemFont, "Segoe UI", Meiryo, monospace;
    word-break: break-all;
}

.footer{
    background-color:  #2a7253;
    color: white;
    text-align: right;
    padding: 1%;
}

details {
    border: 1px solid #aaa;
    border-radius: 4px;
    width: 100%;
    padding: 0.2em;
    display: inline-block;
    vertical-align: middle;
    text-align: center;
}

summary {
    font-weight: bold;
    margin: 0;
    padding: 0.5em;
    font-size: x-large;
}

.table_of_contents_ol {
    width: 100%;
    margin: auto;
    padding: 0;
    display: -webkit-flex;
    display: flex;
    -webkit-justify-content: center;
    justify-content: center;
    flex-wrap: wrap;
}

.table_of_contents_li {
    padding: 1.0em 1.0em 1.0em 2.0em;
    margin: 0.5em;
    width: max(min(90%, 15em), 25%);
    text-align: left;
    border: 1px solid #aaa;
    border-radius: 4px;
}

.download_button {
    text-decoration: none;
    background-color:  #2a7253;
    color: white;
    font-size: min(17pt, 5vw);
    padding: 20px;
    border-radius: 13pt;
}

.download_button_container {
    margin: max(4%, 30px) auto;
    text-align: center;
}

.download_icon {
    height: min(17pt, 5vw);
}

.util_wrapper {
    margin: auto;
    height: 30px;
    text-align: right;
}