@charset "UTF-8";
body {
    background-color: #f2f4f5;
    background: linear-gradient(to bottom, #f2f4f5 80%, #cfeaee);
    background-attachment: fixed;
}

header,img{
    width:auto;
    height:125px;
}

nav li{
    display: block;
    width: 100px;
    float: left;
}

nav a{
    color:#f2f4f5;
    background:linear-gradient(to bottom, #8cdeeb, #21b8bd);
    display: block;
    line-height: 1.0;
    padding: 6px 0;
    border-left: 1px solid #f2f4f5;
    text-align : center;
    text-decoration: none;
    box-shadow: 0px 0px 6px -2px  #465862 inset;
}
    
/*line-gradientはtrandition使えないかも*/

nav a:hover{
    background:linear-gradient(#dad461,#c7c059) ;
}

nav #current a {
    color: #7c5e39;
    background: #f2f4f5;
}

h2{
    color: #21b8bd;
}
h3{
    padding: 0.4em;
    color:#c7c059;
    border-left: solid 5px #bdd2d6;
}
p{
    color:#7c5e39;
}

#page {
    margin: 0 auto;
    width: 900px;
}
#main {
    position: relative;
    margin: 60px 0px 20px 0;
    padding: 20px;
    background-color: #f9fbfd;
    
    border-radius: 20px;
    box-shadow: 0 4px 12px #b4b4ff4d;

}
   
footer {
    clear: both;
}

/*課題が増えたら実装

#kadailist {
    display: flex;
    flex-wrap: wrap;
    gap : 20px;
    padding : 20px;
    justify-content: center;
}

.kadai{
    width:300px;
    border : 1px solid #cccccc;
    border-radius : 10px;
    overflow : hidden;
    text-align : center;
    box-shadow : 2px 2px 8px #0000001a;
}

.kadai img {
    width: 300px;
    height: auto;
    display: block;
}

nav a{
    color:#f2f4f5;
    background-color :#21b8bd;
    display: block;
    line-height: 1.0;
    padding: 6px 0;
    border-left: 1px solid #f2f4f5;
    text-align : center;
    text-decoration: none;
    box-shadow: 0px 0px 6px -2px  #465862 inset;
}

nav a:hover{
    background: #c7c059;
}

nav #current a {
    color: #7c5e39;
    background-color: #f2f4f5;
}

*/