/* 見出し2 */

.post-content h2 {
    font-size: 28px;
    background-color: #F3F3F3;
    border-radius: 5px;
    padding: 21px 18px 20px;
    font-weight: bold!important;
    margin: 60px 0 24px;
}
.post-content h2 span{
	color: #232323
}

/* 文の高さを調整*/



/* ===================================================
あわせて読みたい　複数リンク対応カスタマイズ
=================================================== */
.emphasize-link {
position: relative;
margin: 36px 0 16px;
padding: 16px 10px;
border: 2px solid #df8182;
background-color: #fffbf5;
}
.emphasize-link p:last-child {
margin-bottom: 0;
}
.emphasize-link::before {
position: absolute;
bottom: 100%;
left: -2px;
padding: 2px 6px;
content: "あわせて読みたい";
background-color: #df8182;
color: #fff;
font-weight: bold;
}

/* 見出し枠線 https://saruwakakun.com/html-css/reference/box */

.box1 {
    padding: 0.5em 1em;
    margin: 2em 0;
    font-weight: bold;
    border: solid 3px #000000;
}
.box1 p {
    margin: 0; 
    padding: 0;
}


/** ボタン **/

a.btn {
  	display:block;
    position: relative;
    display: inline-block;
    font-weight: bold;
    padding: 0.25em 0.5em;
    text-decoration: none;
    color: #FFF;
    background: #00bcd4;
    transition: .4s;
  }

.btn:hover {
    background: #1ec7bb;
}

/** 別タブマークをリンクにつける**/

.exit:after {
content: url(https://yossense.com/images/article/icon_external.gif);
position: relative;
bottom: -0.19em;
margin-left: 0.3em;
}<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /export/sd219/www/jp/r/e/gmoserver/5/7/sd1064957/dividable.net/wordpress-4.9.6-ja-jetpack_webfont-undernavicontrol/wp-includes/functions.php:4212) in <b>/export/sd219/www/jp/r/e/gmoserver/5/7/sd1064957/dividable.net/wordpress-4.9.6-ja-jetpack_webfont-undernavicontrol/wp-content/plugins/stripe/includes/core/libraries/wp-session/class-wp-session.php</b> on line <b>146</b><br />