body{
      background-image:url("image/index_background.jpg");
      background-attachment: fixed;
      background-size: cover;
      background-position: center center;
      margin:0px;
      padding:0px;
}
* html body{
    overflow: hidden;
}
div#headerTitleArea {
    position: fixed !important;
    position: absolute;
    top: -20px;
    left: 0;
    width: 100%;
    height: 70px;
    background-color: rgba(0,0,0,1);
    text-shadow: 2px 2px 2px #ffffff;
    -webkit-text-shadow: 2px 2px 2px #ffffff;
}
div#headerTitleArea h1{
  color: #101010;
  text-align:center;
}

div#headerMenuArea {
    position: fixed !important;
    position: absolute;
    margin-top: 50px;
    left: 0;
    width: 100%;
    height: 70px;
    background-color: rgba(0,0,0,1);
    color: #ffffff;
    border-top-width: 1px;
    border-right-width: 0px;
    border-left-width: 0px;
    border-bottom-width: 0px;
    border-style: solid;
    border-color: #ffffff;
    text-align:center;
}
div#footerArea {
    position: fixed !important;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 30px;
    background-color: #000000;
    color: #ffffff;
    margin-left:20%;
    width:60%;
}
* html div#contentsArea{
    height: 100%;
    overflow: auto;
}
.content{
  background-color: rgba(0,0,0,0.5);
  height: 100%;
  margin-left:20%;
  width:60%;
}
.content_menber{
  display: flex;
}
.content_menber .image {
  width: 200px; /*画像サイズ指定*/
  margin: 0;
  padding: 0;
  overflow: hidden;
  position: relative;
}
.content_menber .text{
  margin: 0 0 0 20px;
  padding: 0;
}
.site-logo img{
    height: 10px;
    width: auto;
}
.gnav {
    text-decoration: none;
    font-weight: bold;
    padding: 0px 0px;
    text-align:center;
    display: inline-block;
}
.gnav__menu{
    display: flex;
    height: 40px;
    list-style:none;
    font-family:'Arial','Tahoma',sans-serif
}
.gnav__menu a{
  color: #ffffff;
  text-decoration: none;
  margin-top: -15px;
}

.gnav__menu__item{
    margin-left: 0px;
}
.square_btn{
  position: relative;
  display: inline-block;
  font-weight: bold;
  padding: 1.5em 1em;
  text-decoration: none;
  border-left: solid 1px #ffffff;
  border-right: solid 1px #ffffff;
  background: #000000;
  transition: .4s;
}
.square_btn:hover {
  background: #ffffff;
  color: #000000;
}

.copyright{
    color: #ffffff;
    font-size: 12px;
    text-align: center;
}

span.charwhite{
  color:#ffffff;
}