body{
    margin: 0;
    line-height: 1.4em;
    font-size: 12px;
    font-family: Arial, Helvetica, "ヒラギノ角ゴシック Pro", "Hiragino Kaku Gothic Pro", 'メイリオ' , Meiryo , Osaka, "ＭＳ Ｐゴシック", "MS PGothic", sans-serif;
    background: #eef;
}
a {
    text-decoration: none;
    color: #207CC1;
}
a:hover {
    text-decoration: underline;
}
h1{
    font-size: 1.5em;
    margin-bottom: 0.5em;
}
h2{font-size: 1.3em;}
h3{font-size: 1.2em;}
h4{font-size: 1.1em;margin-top: 1em;}
h5{font-size: 1em;}
h3.title, h3.title a{
    color: #207CC1;
}
div#page{
    background-color: #fff;
    border-bottom: 1px solid #ddd;
    border-color: #ddd;
    border-left: 1px solid #ddd;
    border-right: 1px solid #ddd;
    border-width: 1px;
    margin: 0 auto;
    width: 83em;
    float:
}
div.logo{
    height:97px;
    float: left;
}
div.cart{
    float: right;
    margin-top: 40px;
    padding-left: 16px;
    border-left: 1px solid #ddd;
    height: 30px;
    width: 200px;
}
div.nav{clear: both;}
ul.nav_items{
    display: block;
    margin: 0;
    height:auto;
    padding: 0;
    font-size: 13px;
    border-top: solid 1px #ddd;
    border-bottom: solid 1px #ddd;
    background-color: rgba(0,0,0,0);
    background-image:linear-gradient(rgb(251, 251, 251) 0%, rgb(238, 238, 238) 100%);
}
ul.nav_items:after {
    content:''; display:block; clear:both; height:0; width:100%;
    height:auto;
}
ul.nav_items li{
    list-style-type: none;
    float: left;
    padding: 0.7em 1em;
    border-right: solid 1px #ddd;
    border-top: none;
    background-image:linear-gradient(rgb(251, 251, 251) 0%, rgb(238, 238, 238) 100%);
}
ul.nav_items li.nav_selected{
    border-bottom: solid 1px #fff;
    margin-bottom: -1px;
    background: #fff;
}
ul.nav_items li.social-tools{
    float: right;
    width: auto;
    border-right: 0;
    padding: 0.6em 1em 0;
    height: 13px;
}
ul.nav_items li a{
    color:#333;
}
ul.nav_items li a:hover{
    text-decoration: none;
}
div.sub_nav{
    clear:both;
}
ul.sub_nav_items{
    margin: 0;
}
ul.sub_nav_items li{
    list-style-type: none;
    font-size: 13px;
    float: left;
    margin: 0.5em 0;
    padding: 0 0.5em;
    border-right:1px solid #ddd;
}
ul.sub_nav_items li a, ul.nav_items li.nav_selected a{
    color:#b9002d;
}
ul.sub_nav_items li a:hover{
    color:#000;
    text-decoration: none;
}
header#banner{
    border-top: 1px solid #ddd;
    clear: both;
}
section#content, div#content{
    max-width: 61em;
    float: left;
    margin-left: 1.5em;
}

div.center{
    clear: both;
    margin: 0 1.5em;
}
div.left{
    width: 30%;
    min-width: 25em;
    float: left;
    clear: left;
}
div.right{
    width: 32em;
    min-width: 25em;
    float: left;
    margin-left: 2em;
}
div.boxed, div.post h2{
    clear: both;
}
div.post h3.title{
    clear: both;
    font-size: 1.1em;
    color: #b9002d;
    margin: 0.5em 0;
}
div.post img{
    float: left;
    margin-right: 0.5em;
}
div.post-inner{
    margin: 1em 0;
}
img.inline-image{
    float: left;
    margin-right: 1em;
}
ul.biblio{
    color: #666;;
    list-style-type: none;
}
ul.biblio li img{
    width: auto;
    margin-right: 2px;
    max-width: 100%;
    height: 12px;
}
div.toolboxes{
    width: 18em;
    float: right;
    margin-left: 2em;
}

div.footer{
    border-top: #ddd solid 1px;
    clear: both;
    padding: 1em;
}
.footer-left{
    color:#333;
    width: 28em;
    float:left;
}
.footer-right{
    color:#333;
    float: right;
    width: 23em;
}
.feature{float: left;}
.service{float: right;}

div.footer-item dl dd{
    -webkit-margin-start:0;
}
div.footer-item ul li{
    list-style-type: none;
    padding-right: 1em;
    margin-left: 1em;
}
ul.footer-category li a{
    color:#666;
}
div.entry-content{
    clear:both;
}
div.tool {
    width:17em;
    border: 1px solid #ddd;
    margin-bottom: 1em;
    border-top: none;
}
div.tool h2 {
    background-color:#b3d02e;
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#c6e347', endColorstr='#b3d02e');
    background: -webkit-gradient(linear, left top, left bottom, from(#c6e347), to(#b3d02e));
    background: -moz-linear-gradient(top,  #c6e347,  #b3d02e);
    border-color: #ddd;
    font-size: 1.1em;
    font-weight: bold;
    padding-left: 0.5em;
    line-height:2em;
    margin: 0 0 0.5em;
}
div.tool p{
    margin: 1em;
    text-indent: 0;
}
div.tool img{
    margin: 1em 1em;
}

div.tool ul{
    list-style-type: none;
    padding-left: 1em;
}
.clearfix:after {
    visibility: hidden;
    display: block;
    content: " ";
    clear: both;
    height: 0;
}
.fb_iframe_widget > span {
  vertical-align: baseline !important;
}
.icon{
    float: left;
    margin-left: 6px;
    background-image: url(https://www.oreilly.co.jp/images/social-icons-16.png);
    display: block;
    width: 16px;
    height: 16px;
}
.icon:before{
    content: '';
    margin: 0 0 0 8px;
}
.twitter{
    background-position: 0 -120%
}
.facebook{
    background-position: 0
}
.feed{
    background-position: 0 100%
}
.carticon{
    margin-right: 0.5em;
    position: relative;
    bottom: -5px;
}
.carttext{
    font-weight:bold;
    font-size:12px;
    color:#333333;
}
header#banner{
    clear: both;
    padding: 1em;
}

article.hentry{
    clear: both;
    padding-top: 1em;
}

h1 a{
    color: #000;
}

h2.entry-title{
    border-bottom: 1px solid #000;
    margin-bottom: 0.5em;
}

h2.entry-title a{
    text-decoration: none;
    color: #000;
    line-height: 1.5em;
}

ul#post-list{
    list-style-type: none;
}

ul#post-list > li{
    margin: 1em 0;
}

footer.post-info{
    margin: 1em 0;
}

address.author{
    float: left;
    margin-right: 1em;
}
p.paginator{
    text-align: center;
    margin: 2em 0;
    clear: both;
}

td.error{
    background-color: pink;
}
span.error{
    font-weight: bold;
    color: #bb0000;
}
h3.explain{
    margin-top: 1em;
    margin-bottom: 0.5em;
}
td.cartbuttonright {
  text-align: right;
}