*{
    margin:0;
    padding: 0;
  }
  　
  html {
height: 100%;
  }

body {
height: 100%;
margin: 0;
overflow: scroll;
border: 0;
outline: 0;
vertical-align: baseline;
padding: 0;
/*↓右にできる余白を取り除く*/
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
background-image:url(../img/texture.png);
line-height: 2em;
font-family: 游明朝,"Yu Mincho",YuMincho,"Hiragino Mincho ProN",HGS明朝E,メイリオ,Meiryo,serif;
-webkit-text-size-adjust: 100%;
}


main {
margin:0 auto 0; 
}

h2 {
    font-size: 32px;  
}

h3 {
    font-size: 32px;  
    text-align: center;
}


h4 {
    color: #fff;
    background: #003476;
    font-size: 17px;
    text-align: center;
    margin: 24px 0 40px;
}

img {
    max-width: 900px;
}

.img_hover {
transition: 0.5s;

}

.img_hover:hover {
    opacity:0.5;
 } 



nav {
    margin: 0 auto;
    padding: 24px 20px;
    width: 900px;
    height: 60px;
}

.nav_logo img {
    height: 24px;
}



.kv {
    text-align: center;
    display: block;
    margin: 10px 0;
}

.contents {
width:600px;
margin:60px auto 0;
padding-bottom: 82px; 
}

.contents img {
padding:30px 0;
margin: 0 auto;
display: block;
max-width: 600px;
}

.nav__logo {
    margin: 0 0 0 70px;
}


.column {
    top: 0;
    margin-bottom:40px;
    -webkit-filter:drop-shadow(1px 3px 5px rgba(0, 0, 0, 0.2));
    -moz-filter:drop-shadow(1px 3px 5px rgba(0, 0, 0, 0.2));
    -ms-filter:drop-shadow(1px 3px 5px rgba(0, 0, 0, 0.2));
    filter:drop-shadow(1px 3px 5px rgba(0, 0, 0, 0.2));
}

.column img {
    width: 50%;
    margin: auto;
}

.column-text {
    font-size: 15px;
    line-height: 1.7;
    margin: auto;
}

.column-wide {
    top: 0;
    margin-bottom:40px;
    -webkit-filter:drop-shadow(1px 3px 5px rgba(0, 0, 0, 0.2));
    -moz-filter:drop-shadow(1px 3px 5px rgba(0, 0, 0, 0.2));
    -ms-filter:drop-shadow(1px 3px 5px rgba(0, 0, 0, 0.2));
    filter:drop-shadow(1px 3px 5px rgba(0, 0, 0, 0.2));
}

.column-wide img {
    width: 80%;
    margin: 60px auto 0;
}

.year  {
    font-size: 40px;
    display: block;
    position: relative;
    top: 55px;
    left: 0%;
    margin: 0;
    font-family: Georgia,游明朝,"Yu Mincho",YuMincho,"Hiragino Mincho ProN",HGS明朝E,メイリオ,Meiryo,serif;

}

.BacktoTop a {
    font-size: 20px;
    font-weight: bold;
    color: #000;
    text-decoration: none;

}

.ad_link {
    list-style-type: none;
    display: flex;
    flex-direction: row;
    align-content: stretch;
    justify-content: space-between;
    align-items: stretch;
    flex-wrap: nowrap;
    text-align: center;
    margin: 0;
    padding: 0;
}

.ad_link img {
    width: 190px;
    margin: 0px 15px 0 0;

}

footer {
    display: flex;
    font-size: 10px;
    padding-bottom: 48px;
    clear: both;
}

.footer_top {
    display: block;
    text-align: center;
    width: 900px;
}

.footer_top li {
display: flex;
float: left;
list-style: none;
margin-right: 24px;
}

.footer_top a {
text-decoration:none; 
color:black;
}

.footer-right {
padding-left: 224px;
}