body {
    width:800px;
    margin:20px auto;
    font-family:"Meiryo";
    font-size:12px;
}
header, nav, article, aside, section, footer {
    display:block;
}
header, nav, article, aside, section, footer {
    margin:0px 0px 5px;
    padding:10px;
}
header {
    text-align:center;
}
.header_title1 {
    font-size:200%;
}

.header_title2 {
    font-size:130%;
    margin:0 0 0 0;
    padding:2px 8px; /* 上下 左右 */
    background:#f79708;
    color:#FFFFFF;
    line-height:130%;
    font-weight:bold;
    text-align:right;
}
img.top_image{
    width:240;
    height:180;
}
nav {
    text-align:left;
    padding:0px;
    font-size:115%;
}
nav ul, nav li {
    list-style-type:none;
    padding:0px 10px;
}
nav ul h1 {
    display:none;
}
article {
    float:left;
    width:620px;
    font-size:130%;
}
aside {
    float:left;
    width:130px;
}
footer {
    clear:both;
    text-align: center;
    padding: 5px;
}

#heading01{
    position:relative;
    margin:0 10px;
    padding:0 10px 0 55px;
    font:bold 22px/40px Arial, Helvetica, sans-serif;
    color:#666;
    background:#f3f3f3;
    z-index:1;
}
#heading01:before{
    content:" ";
    position:absolute;
    top:0;
    left:0;
    width:40px;
    height:40px;
    border-right:#fff solid 2px;
    background:#f60;
    background-image: -webkit-gradient(linear, left top, left bottom,
            from(             rgba(255, 255, 255, 0.0)), 
            color-stop(0.20, rgba(255, 255, 255, 0.0)), 
            color-stop(0.20, rgba(255, 255, 255, 0.1)), 
            color-stop(0.40, rgba(255, 255, 255, 0.1)), 
            color-stop(0.40, rgba(255, 255, 255, 0.3)), 
            color-stop(0.60, rgba(255, 255, 255, 0.3)), 
            color-stop(0.60, rgba(255, 255, 255, 0.5)), 
            color-stop(0.80, rgba(255, 255, 255, 0.5)), 
            color-stop(0.80, rgba(255, 255, 255, 0.6)), 
            to(                 rgba(255, 255, 255, 0.6))
            );
    background-image: -webkit-linear-gradient(top,
            transparent 20%,
            rgba(255, 255, 255, 0.1) 20%, 
            rgba(255, 255, 255, 0.1) 40%, 
            rgba(255, 255, 255, 0.3) 40%, 
            rgba(255, 255, 255, 0.3) 60%, 
            rgba(255, 255, 255, 0.5) 60%, 
            rgba(255, 255, 255, 0.5) 80%, 
            rgba(255, 255, 255, 0.6) 80%, 
            rgba(255, 255, 255, 0.6) 100%
            );
    background-image: -moz-linear-gradient(top,
            transparent 20%,
            rgba(255, 255, 255, 0.1) 20%, 
            rgba(255, 255, 255, 0.1) 40%, 
            rgba(255, 255, 255, 0.3) 40%, 
            rgba(255, 255, 255, 0.3) 60%, 
            rgba(255, 255, 255, 0.5) 60%, 
            rgba(255, 255, 255, 0.5) 80%, 
            rgba(255, 255, 255, 0.6) 80%, 
            rgba(255, 255, 255, 0.6) 100%
            );
    background-image: -o-linear-gradient(top,
            transparent 20%,
            rgba(255, 255, 255, 0.1) 20%, 
            rgba(255, 255, 255, 0.1) 40%, 
            rgba(255, 255, 255, 0.3) 40%, 
            rgba(255, 255, 255, 0.3) 60%, 
            rgba(255, 255, 255, 0.5) 60%, 
            rgba(255, 255, 255, 0.5) 80%, 
            rgba(255, 255, 255, 0.6) 80%, 
            rgba(255, 255, 255, 0.6) 100%
            );
    background-image: linear-gradient(to bottom,
            transparent 20%,
            rgba(255, 255, 255, 0.1) 20%, 
            rgba(255, 255, 255, 0.1) 40%, 
            rgba(255, 255, 255, 0.3) 40%, 
            rgba(255, 255, 255, 0.3) 60%, 
            rgba(255, 255, 255, 0.5) 60%, 
            rgba(255, 255, 255, 0.5) 80%, 
            rgba(255, 255, 255, 0.6) 80%, 
            rgba(255, 255, 255, 0.6) 100%
            );
            z-index:-1;
}
#heading01:after{
    content:" ";
    position:absolute;
    top:0;
    left:0;
    width:40px;
    height:40px;
    background-image: -webkit-gradient(linear, left top, right top,
            from(             rgba(255, 255, 255, 0.0)), 
            color-stop(0.20, rgba(255, 255, 255, 0.0)), 
            color-stop(0.20, rgba(255, 255, 255, 0.1)), 
            color-stop(0.40, rgba(255, 255, 255, 0.1)), 
            color-stop(0.40, rgba(255, 255, 255, 0.3)), 
            color-stop(0.60, rgba(255, 255, 255, 0.3)), 
            color-stop(0.60, rgba(255, 255, 255, 0.5)), 
            color-stop(0.80, rgba(255, 255, 255, 0.5)), 
            color-stop(0.80, rgba(255, 255, 255, 0.6)), 
            to(                 rgba(255, 255, 255, 0.6))
            );
    background-image: -webkit-linear-gradient(left,
            transparent 20%,
            rgba(255, 255, 255, 0.1) 20%, 
            rgba(255, 255, 255, 0.1) 40%, 
            rgba(255, 255, 255, 0.3) 40%, 
            rgba(255, 255, 255, 0.3) 60%, 
            rgba(255, 255, 255, 0.5) 60%, 
            rgba(255, 255, 255, 0.5) 80%, 
            rgba(255, 255, 255, 0.6) 80%, 
            rgba(255, 255, 255, 0.6) 100%
            );
    background-image: -moz-linear-gradient(left,
            transparent 20%,
            rgba(255, 255, 255, 0.1) 20%, 
            rgba(255, 255, 255, 0.1) 40%, 
            rgba(255, 255, 255, 0.3) 40%, 
            rgba(255, 255, 255, 0.3) 60%, 
            rgba(255, 255, 255, 0.5) 60%, 
            rgba(255, 255, 255, 0.5) 80%, 
            rgba(255, 255, 255, 0.6) 80%, 
            rgba(255, 255, 255, 0.6) 100%
            );
    background-image: -o-linear-gradient(left,
            transparent 20%,
            rgba(255, 255, 255, 0.1) 20%, 
            rgba(255, 255, 255, 0.1) 40%, 
            rgba(255, 255, 255, 0.3) 40%, 
            rgba(255, 255, 255, 0.3) 60%, 
            rgba(255, 255, 255, 0.5) 60%, 
            rgba(255, 255, 255, 0.5) 80%, 
            rgba(255, 255, 255, 0.6) 80%, 
            rgba(255, 255, 255, 0.6) 100%
            );
    background-image: linear-gradient(to right,
            transparent 20%,
            rgba(255, 255, 255, 0.1) 20%, 
            rgba(255, 255, 255, 0.1) 40%, 
            rgba(255, 255, 255, 0.3) 40%, 
            rgba(255, 255, 255, 0.3) 60%, 
            rgba(255, 255, 255, 0.5) 60%, 
            rgba(255, 255, 255, 0.5) 80%, 
            rgba(255, 255, 255, 0.6) 80%, 
            rgba(255, 255, 255, 0.6) 100%
            );
            z-index:-1;
}