.detail_expl {font-size:15px;line-height:23px; margin-top:10px;}
.twitter-share-button {margin-right:10px;}
.div{width: 400px;}
.detail_expl p {font-size:16px;width:500px;margin:1em 0px;line-height: 2em}
.detail_expl h1 {font-size:18px;color:black;background:#f08080; 
padding: 0.5em;
color: white;
border-radius: 0.5em;}
.detail_expl h2 {font-size:18px;color:black;border-bottom: dotted 3px #f08080;}