/* CSS Document */

body {
    font-family: YuMincho, "Yu Mincho", "Hiragino Mincho ProN", "serif";
    width: 100%;
    margin: 0;
    padding: 0;
    color: white;
    background-image: url('../imgs/oblong_bg.png');
    background-attachment:fixed;
    background-repeat: no-repeat;
    background-position: top center;
    background-color:black;
    position: relative;
    background-size: cover;
}

div.spBg {
    display: none;
}

@media screen and (max-width:480px) {
    
body:before{
  content:"";
  display:block;
  position:fixed;
  top:0;
  left:0;
  z-index:-1;
  width:100%;
  height:100vh;
  background:url('../imgs/oblong.jpg') center no-repeat;
  background-size:cover;
}

#sp1{
font-size: 12px;
}


}

a{
    color: white;
    text-decoration: none;
}
a:hover{
    text-decoration: underline;
}

nav{
    background-color:rgba(0, 0, 0,0.6);
    text-align: center;
    line-height: 50px;
    position: sticky;
    top: 0;
}
header {
    width: 80%;
    margin: 0 auto;
    height:auto;
    text-align: center;

}

h1{
    font-size: 300%;
}

div#title {
    width: 80%;
    margin: 0 auto;
    height:auto;
    text-align: center;
}

div#box{
    width: 80%;
    margin: 0 auto;
    height:auto;
    color: white;
    text-align: center;
    line-height: 1.7em;
}
footer{
    height: 40px;;
    text-align: center;
    background-color:black;
    line-height: 40px;
    background-color:rgba(0, 0, 0,0.6);
}