body {
    font-family: "Helvetica", "Arial", sans-serif;
    margin-left: 3%;
    margin-right: 3%;
    font-size: 16px;
    line-height: 1.8; 
    color: #333;
}
h1, h2, h3 {
    margin-top: 1.5em;
    margin-bottom: 1em;
    line-height: 1.4;
}
h1{
    font-size: x-large;
    width: 100%;
    background: #bbf;
}
h2{
    font-size: large;
    padding:3px 5px;
    border-color:#0B0099;
    border-width:1px 1px 1px 7px;
    border-style:solid;
}
h3{
    font-size: medium;
    /*padding:3px 5px;*/
    border-color:#6AA2DB;
    border-width:0 0 1px 7px;
    border-style:solid;
    background: #f5f8ff; /* #F8F8F8;*/
}
ul, ol {
    /*margin-left: 1.5em;*/
    margin-left: 1%;
    padding-left: 0;
}
li {
    margin-left: 2%;
    margin-bottom: 0.5em;
}
/* 上付き文字の調整 */
sup {
    font-size: 0.8em;
    vertical-align: super; /* baselineより上に揃える */
    line-height: 0; /* 行間に影響させない */
}
table {
    border-collapse: collapse;
    width: 100%;
}
th, td {
    border: 1px solid #999;
    padding: 8px;
    text-align: left;
}
tr.group-header {
    background-color: #f0f0f0;
    font-weight: bold;
}
tr.table-header {
    background-color: #000000;
    font-weight: bold;
    color: #ffffff;
}

body {
    font-family: sans-serif;
    margin: 20px;
}

.tab-header {
    display: flex;
    border-bottom: 2px solid #ccc;
    margin-bottom: 10px;
}

.tab-button {
    flex: 1;
    padding: 10px;
    text-align: center;
    cursor: pointer;
    background-color: #f0f0f0;
    border: 1px solid #ccc;
    border-bottom: none; /*2px solid red; */
    transition: background-color 0.3s;
    /*border-top-left-radius: 8px;*/
    /*border-top-right-radius: 8px;*/
}

.tab-button:hover {
    background-color: #e0e0e0;
}

.tab-button.active {
    background-color: #ffffff;
    font-weight: bold;
    border-bottom: 3px solid #6AA2DB;
    /*border-bottom: 3px solid #0078D4;*/ /* 青系の強調ライン */
}

.tab-content {
    display: none;
    /*padding: 15px;*/
    border: 1px solid #ccc;
    background-color: #fafafa;
}

.tab-content.active {
    display: block;
}