/*------------------------↓アバウトボタン------------------------*/

#about_button{
  display: inline-block;

/*使わない
	position:fixed;
	top: 40px;
	right:20px;
	width: 40px;
	height: 40px;
	z-index: 999;
	border-radius: 5px;
	background-color: #666;
	cursor : pointer;
}
*/


#about_button p{
  font-weight: bold;
  text-align: center;
  line-height: 40px;
  color: #fff;

}
#linkicon{
  position:fixed;
  list-style: none;
  font-size: 0;
  right:20px;
  top: 40px;
}

 
#linkicon li{
  text-align: center;
  display: inline-block;
  width: 40px;
  height: 40px;
  border-radius: 5px;
  color: #fff;
  font-size: 1rem;
  font-weight: bold;
  line-height: 40px;
}

.contentspage{
    text-indent: 999px;
    background: rgba(60,60,60,0.2) url(../p/contents.svg) no-repeat center center / 30px;
    cursor : pointer;
}

#nav  .contentspage:hover{
    background: rgba(60,60,60,0.8) url(../p/contents.svg) no-repeat center center / 30px;
}


/*------------------------    目次    ------------------------*/

.contents_area{
display: block;
    color: #333;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height:100%;
    z-index: 999999;
    background: linear-gradient(to bottom,
        rgba(225, 225, 235, 1) 0%,
        rgba(235, 235, 245, 0.9) 30%,
        rgba(235, 235, 245, 0.8) 57%,
        rgba(235, 235, 245, 0.9) 100%);
    overflow: scroll;
}

.contents_inner{
    position: relative;
    margin: 50px auto;
    padding: 20px;
    width: 80vw;
    height:auto;
    background: rgba(250,250,250,0.3);
    border-radius: 5px;
    text-shadow: 0px 0px 2px #fff;
    font-size: 18px;

}

#contents li{
    padding-bottom: 1em;
}
#contents h4{
    font-size: 4rem;
    font-weight: lighter;
}
.cbtn{
    width: 16px;
    height: 16px;
    padding: 0;
    margin: 0 auto;
}

.closebtn{
    border-style: none;
    border-radius: 2px;
    background: rgba(100,100,100,0.8);
    fill: #fff;
  }

.closebtn:hover{
fill: #aaa;
}