button{
    background-color:#111111;
    color:#ffffff;
    border:0px;
    font-size:18px;
    width:80px;
    height:35px;
    border-radius:10px;
}
button:active{
    background-color:#2d2c2d;
}
body{
    background-color:#ffe45c;
}
header{
    position: fixed;
    box-shadow: 2px 1px 5px 5px #111111;
    background-color:#111111;
    color:#ffffff;
    position: fixed;
    display: flex;
    width: 100%;
    height: 100px;
    align-items: center;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    padding:4px;
}
h1.title{
    margin-right: auto;
    font-size:28px;
    font-family: '游明朝','Yu Mincho',YuMincho,'Hiragino Mincho Pro',serif;
}