body {
    margin: 0;
    display: flex;
    flex-flow: column;
    min-height: 100vh;
}
main {
    flex: 1;
}
.img_size_auto{
    max-width: 100%;
    height: auto;
}

/* コラム明細 */
div.column_main
{
	height:100%;
	width:100%;
	overflow-y:scroll;
}

/* コラム明細 */
div.column
{
	border-style: dotted; 
	border-width: 2px; 
	margin-top:15px; 
	margin-left:15px; 
	margin-right:15px; 
	padding: 10px 5px 10px 20px; 
	border-color: #0000FF; 
	color: black; 
	background-color: lavender;
}

.menu-container {
	margin: 0;
  }
  
  .menu-container .menu {
	display: flex;
	justify-content: space-between;
	list-style: none;
	margin: 0;
	padding: 0;
  }
  
  .menu-container .menu .menu-item {
	flex: 1;
  }
  
  .menu-container .menu .menu-item a {
	background: #2cf3078c;
	border: 1px solid #ccc;
	border-right: none;
	color: #333;
	display: block;
	padding: 0.6em 0.4em;
	text-align: center;
	text-decoration: none;
  }
  
  .menu-container .menu .menu-item a:hover {
	background: #000088;
	color: #ffffff;
  }
  
  .menu-container .menu .menu-item:last-child a {
	border-right: 1px solid #ccc;
  }
  
  @media screen and (max-width: 768px) {
	.menu-container .menu {
	  flex-wrap: wrap;
	  width: 100%;
	}
	.menu-container .menu .menu-item {
	  flex: auto;
	  width: 33.33333333%;
	}
	.menu-container .menu .menu-item:nth-child(3n) a {
	  border-right: 1px solid #ccc;
	}
	.menu-container .menu .menu-item:nth-child(n + 4) a {
	  border-top: none;
	}
  }

  h2 {
	background: #eaf5f9;
	border-left: solid 10px #27acd9;
	padding: 0.75rem 1.5rem;
  }

  h3 {
	background: #eaf5f9;
	border-left: solid 10px #27acd9;
	padding: 0.75rem 0.5rem;
  }

  h4 {
	position: relative;
	padding-left: 70px;
  }
  
  h4:before {
	position: absolute;
	content: '';
	bottom: -3px;
	left: 50px;
	width: 0;
	height: 0;
	border: none;
	border-left: solid 15px transparent;
	border-bottom: solid 15px rgb(119, 195, 223);
  }
  h4:after {
	position: absolute;
	content: '';
	bottom: -3px;
	left: 60px;
	width: 450px;
	border-bottom: solid 3px rgb(119, 195, 223);
  }

.goaisatu{
    display: flex;
	align-items: flex-end
}

.goaisatu_right{
	width: 30%;
}
.goaisatu_left{
	width: 70%
}

/* 会社情報 */
div.info
{
	/*background-image	: url('../images/info.jpg');*/
	background-repeat	: no-repeat;
	background-position	: left top;
	width				: 700px;
	height				: 500px;
	margin				: 0px 0px 0px 1em;
	padding				: 0px;
	border				: solid 1px #FFFFFF;	/* Opera対応 */
}

div.info table
{
	text-align			: left;
	vertical-align		: middle;
	margin-top			: 15px;
	margin-left			: 4em;
	background-color	: transparent;
}

div.info table th, div.info table td
{
	border-bottom		: dotted #93a3e3 2px;
	padding-top			: 6px;
	line-height			: 16px;
}

div.info table th
{
	padding-right		: 1.5em;
	color				: #2b2b2b;
}

/* お問い合わせ */
div.contuct_us
{
	/*background-image	: url('../images/contuct_us.jpg');*/
	background-repeat	: no-repeat;
	background-position	: right top;
	width				: 568px;
	height				: 300px;
	margin				: 0px 0px 0px 1em;
	padding				: 0px;
	border				: solid 1px #FFFFFF;	/* Opera対応 */
}

div.contuct_us table
{
	text-align			: left;
	vertical-align		: middle;
	margin-top			: 5px;
	margin-left			: 55px;
	background-color	: transparent;
	width				: 660px;
	border-top			: solid #93a3e3 1px;
	border-left			: solid #93a3e3 1px;
}

div.contuct_us table th, div.contuct_us table td
{
	border				: solid #93a3e3 1px;
	border-top			: none;
	border-left			: none;
	padding				: 3px 1em 3px 1em;
	line-height			: 16px;
}

div.contuct_us table th
{
	text-align			: center;
	font-weight			: normal;
	color				: black;
	white-space			: nowrap;
	background-color	: #C5C3F0;
}

/* 採用担当より */
div.wewant span { color : deeppink; font-weight : bold; }

/* 採用 */
div.reqruit
{
	background-repeat	: no-repeat;
	background-position	: right top;
	width				: 568px;
	margin-left			: 68px;
	padding				: 0px;
	border				: solid 1px #FFFFFF;	/* Opera対応 */
}

div.reqruit table
{
	text-align			: left;
	vertical-align		: middle;
	margin				: 0.5em 0px 0.5em 0px;
	background-color	: transparent;
	border-top			: solid #93a3e3 1px;
	border-left			: solid #93a3e3 1px;
}

div.reqruit table    { width : 660px; }

div.reqruit table th, div.reqruit table td
{
	border				: solid #93a3e3 1px;
	border-top			: none;
	border-left			: none;
	padding				: 3px 1em 3px 1em;
	line-height			: 16px;
}

div.reqruit table th
{
	text-align			: center;
	font-weight			: normal;
	color				: black;
	white-space			: nowrap;
	background-color	: #C5C3F0;
}

.flex{
    display: flex;
}
.flex div{
    background:  blue;
}
.right{
    width: 70%
}
.left{
    width: calc(100% - 70%);
}