html, body {
  margin: 0px;
  padding: 0px;
  border: 0px;
  outline: 0px;
  font-weight: inherit;
  font-style: inherit;
  font-size: 100%;
  font-family: inherit;
  vertical-align: baseline;
  overflow:auto;
}

a {
  text-decoration: none;
}
.titlea {
  font-size: 15px;
  color: blue;
}
.titlec {
  font-size: 12px;
}
.titleb {
  font-size: 12px;
  color: purple;
}
ul.videos1 li {
  float: left;
  width: 500px;
  padding-left: 0px;
  padding-top: 0px;
  margin: 5px 0px;
  cursor: hand;
  cursor: pointer;
}
ul.videos1 {
  margin: 5px 0px;
  padding-left: 0px;
  padding-top: 0px;
  list-style: none;
}
ul.videos2 li {
  float: left;
  width: 350px;
  padding-left: 10px;
  padding-top: 0px;
  margin: 5px 0px;
  cursor: hand;
  cursor: pointer;
  background-image: url(../image/arrow.gif) ;
  background-position: left center ;
  background-repeat: no-repeat ; 
}
ul.videos2 {
  padding-left: 0px;
  padding-top: 0px;
  margin: 5px 10px;
  list-style: none ;
}
/* TAB */
div.midashi {
  margin: 0px;  /* 周囲の余白 */
  padding: 0px;  /* 内側の余白 */
  width: 200px;
  height: 30px;
  float: left;
}
div.tabbox {
  margin: 0px 0px 10px 0px;  /* 周囲の余白 */
  padding: 0px;  /* 内側の余白 */
  width: 700px;
  height: 30px;
}
/* タブ部分 */
div.tabbox ul.tabs {
  margin:  0px;
  padding: 0px;
}
div.tabbox ul.tabs li {
  margin: 0px;
  padding: 0px;
  list-style-type: none;
  float: left;
  width: 120px;
  /* 左上の角丸 */
  background-image: url("../image/tab-base.gif");
  background-repeat: no-repeat;
  background-position: left top;
}
div.tabbox ul.tabs a {
  display: block;
  padding: 5px 0px;
  height: 20px;  /* タブの高さ */
  text-align: center;
  text-decoration: none;
  /* 右上の角丸 */
  background-image: url("../image/tab-right.gif");
  background-repeat: no-repeat;
  background-position: right top;
}
/* タブ個別 */
div.tabbox ul.tabs li.tab1 {
  background-color: a7a7a7;
  border-bottom: 1px solid #a7a7a7;
}
div.tabbox ul.tabs li.tab2 {
  background-color: #e6e6e6;
  border-bottom: 1px solid black;
}
div.tabbox ul.tabs a:link, div.tabbox ul.tabs a:visited {
  color: white;
}
div.tabbox ul.tabs a:hover {
  color: blue;
  text-decoration: none;
}