body{
    height: 100%;
    margin: 0 auto;
    min-height: 100vh;
    position: relative;/*←相対位置*/
    padding-bottom: 0px;/*←footerの高さ*/
    box-sizing: border-box;/*←全て含めてmin-height:100vhに*/
}
header{
    position: sticky;
    top: 0;
    width: 100%;
    height: 70px;
    background: white;
    border-bottom:solid thin #EEE;
    box-shadow:rgba(122, 122, 122, 0.5) 0px 0px 6px 3px;
    display: flex;
    justify-content: space-between;
	z-index: 1;
}header div{
    margin: auto 10px;
}header img{
    height: 50px;
    margin-top: 10px;
}
footer{
    margin: 0;
    padding: 0;
    background: #0063B1;
    color: white;
    display: flex;
    align-items: center;
    height: 70px;
}footer div{
    margin: 0 auto;
}
footer a{
    color: #fff;
    font-weight: bolder;
}
.info {
    padding: 10px;
}
button {
    appearance: auto;
    outline: 0;
    border: none;
    background: none;
    padding: 10px 20px;
    margin: auto 10px;
    border-radius: 5px;
    width: auto;
    color: white;
    font-size: 1.05em;
    cursor: pointer;
} button:hover {
    font-weight: bolder;
} .top {
    background: #1198c9;
} .entry {
    background: #53cdcb;
} 
header button::after {
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    content: '\f138';
    font-size: normal;
}
