body {
margin: 15px 0px 20px 0px; /*ページ全体の余白*/
/* ページの背景イメージ */
background-image:
url("http://jean-luc.boy.jp/blog/img/bg_green2.jpg");
text-align: center;

}

<!-- 文字の設定-->
a {
text-decoration: underline;


}

a:link {
color: #006699;
}

a:visited {
color: #006699;
}

a:active {
color: #009933;
}

a:hover {
color: #009933;
}

h1, h2, h3 {
margin: 0px;
padding: 0px;
font-weight: normal;
}

/* エントリーのある大段落 */
#container {
line-height: 130%; /* 行間隔 */
margin-right: auto;
margin-left: auto;
text-align: left;
padding: 0px;
width: 700px;

background-color: #FCFFE6;/* 背景白*/
border: 1px solid #000033;/* 濃い青の枠 */
}

/* ブログタイトル */
#banner {

background-repeat:no-repeat;
background-image: url("http://jean-luc.boy.jp/blog/img/title1.jpg");
height:120px;/* 画像の高さ*/

}

a#banner-img {
display: none;
}

#banner a {
color: #FFFFFF;
text-decoration: none;
}

#banner h1 {
font-size: xx-large;
}

#banner h2 {
font-size: small;
}

#center {
float: left;
width: 500px;


overflow: hidden;
}

/* ★記事の段落 */
.content {
padding: 15px 15px 5px 15px;
background-color:#FCFFE6;

color: #666666;
font-family: Verdana, Arial, sans-serif;
font-size: x-small;
}

#right {
float: left;


width: 200px;
background-color: #FCFFE6;

overflow: hidden;
}
/* ★ 記事の段落*/
.content p {
color: #666666;
font-family: Verdana, Arial, sans-serif,
"ヒラギノ角ゴ Pro W3", "ＭＳ Ｐゴシック", "Osaka", ;

font-size: small; /* フォントサイズ */
font-weight: normal; /`フォントスタイル*/
line-height: 150%; /*行間*/
text-align: left; /`文字の位置`/
margin-bottom: 15px; /*次の段落までの間隔*/
}

.content blockquote {
line-height: 150%;
}

.content li {
line-height: 150%;
}

.content h2 {
color: #666666;
font-family: Verdana, Arial, sans-serif,
"ヒラギノ角ゴ Pro W3", "ＭＳ Ｐゴシック", "Osaka", ;
font-size: x-small;

text-align: left;
font-weight: bold;


margin-bottom: 10px;

}

.content h3 {
color: #666666;
font-family: Verdana, Arial, sans-serif;
font-size: small;

text-align: left;
font-weight: bold;


margin-bottom: 10px;

}

.content p.posted {
color: #999999;
font-family: Verdana, Arial, sans-serif;
font-size: x-small;
/* ★投稿者より後ろに線を引く */
border-bottom: 1px solid #999999;
text-align: left;

margin-bottom: 25px;
line-height: normal;
padding: 3px;
}

/* カテゴリアイコンを中央にそろえる */
.cate_icon {vertical-align:middle;}

.sidebar {
padding: 15px;
}

#calendar {
line-height: 140%;
color: #666666;
font-family: Verdana, Arial, sans-serif;
font-size: x-small;



padding: 2px;
text-align: center;
margin-bottom: 30px;
}

#calendar table {
padding: 2px;
border-collapse: collapse;
border: 0px;
width: 100%;
}

#calendar caption {
color: #666666;
font-family: Verdana, Arial, sans-serif;
font-size: x-small;

text-align: center;
font-weight: bold;

text-transform: uppercase;

letter-spacing: .3em;
}

#calendar th {
text-align: center;
font-weight: normal;
}

#calendar td {
text-align: center;
}

.sidebar h2 {
color: #666666;
font-family: Verdana, Arial, sans-serif;
font-size: x-small;

text-align: center;
font-weight: bold;

text-transform: uppercase;

letter-spacing: .3em;
}

.sidebar ul {
padding-left: 0px;
margin: 0px;
margin-bottom: 30px;
}

.sidebar li {
color: #666666;
font-family: Verdana, Arial, sans-serif;
font-size: x-small;
text-align: left;
line-height: 150%;



margin-top: 10px;
list-style-type: none;
}

.sidebar img {
border: 3px solid #FFFFFF;
}

.photo {
text-align: left;
margin-bottom: 20px;
}

.link-note {
font-family: Verdana, Arial, sans-serif;
font-size: x-small;
line-height: 150%;
text-align: left;
padding: 2px;
margin-bottom: 15px;
}

#powered {
font-family: Verdana, Arial, sans-serif;
font-size: x-small;
line-height: 150%;
text-align: left;
color: #666666;
margin-top: 50px;
}

#comment-data {
float: left;
width: 180px;
padding-right: 15px;
margin-right: 15px;
text-align: left;
border-right: 1px dotted #BBB;
}

textarea[id="comment-text"] {
width: 80%;
}