#blog{
 width:100%;
 margin: 0 auto;
}

#blog h2{
  font-size:30px;
  margin:30px auto;
}

/*　leftcolumn　*/

#leftColumn{
	float: left;
	width: 680px;
}
#leftColumn .single_date{
	padding: 0 0.25rem 0.25rem;
	font-size: 0.9rem
}
#leftColumn .single_title{
  	margin: 0 0 2rem;
	text-align: left;
	padding: 0 0.5rem 0.25rem;
	border-bottom:solid #FFB600 2px;
	font-size: 1.5rem;
	line-height: 1;
}
#leftColumn .single_content{
	padding-bottom: 1rem;
	margin-bottom: 1rem;
	border-bottom: 1px solid #CCC;
}

/*　sidebar　*/

#sidebar {
  width:250px;
  margin: 0 auto;
  text-align: center;
}

#sidebar ul {
  display: block;
  list-style: none;
  margin: 0;
  align-items: center;
}