header {
    background-color: orange;
    text-align: center;
    color: #000000;
    /*文字色*/
    border: solid 3px #000000;
    /*線色*/
    padding: 0.5em;
    /*文字周りの余白*/
    border-radius: 0.5em;
    /*角丸*/
}

body {
    background-color: gray;

}


h1 {
    font-family: serif;

}

h2 {
    background-color: orange;
    padding: 1rem;
}

main {
    padding-left: 1rem;
    padding-right: 1rem;
    padding-bottom: 1rem;
    padding-top: 1px;
    background-color: #fff;
    margin-top: 1rem;
    margin-bottom: 1rem;
    border-radius: 0.5rem;
}

.description {
    background-color: #ececec;
    padding: 2rem;
    margin-bottom: 1rem;
}

img {
    max-width: 100%;
    border: solid 1px;
}

footer {
    min-height: 6rem;
    display: flex;
    justify-content: center;
    padding: 5px;
    background-color: orange;
    color: #fff;
}

.link-button {
    padding: 1rem;
    display: inline-block;
    border-radius: 0.5rem;
    background-color: rgb(255, 174, 0);
    font-size: large;
    text-decoration:none;
    border: solid 4px rgb(0, 0, 0);

    font-weight: bold;
    margin-right: 1rem;
    margin-bottom: 1rem;
    position: fixed;
    bottom: 10px;
    right: 10px;

}
.link-button:hover {
    color: #ff0000;

    background-color: rgb(255, 212, 118)
}