/* トップへ戻るボタン */
.page_top_btn {
    position: fixed;
    bottom: 10px;
    right: 10px;
    font-weight: bold;
    padding: 0.7em;
    text-align: right;
    font-size: 12px;
    background: rgb(255, 255, 255, 0.25);
    color: #999;
    transition: 0.3s0;
}

.page_top_btn a{
    text-decoration: none;
    color: #600;
}
/* マウスオーバー時 */
.page_top_btn:hover {
    background: rgb(255, 0, 0, 0.5);
    color: #333;
}
.page_top_btn:hover a{
    color: #fff;
}
.page_top_btn a:hover{
    text-decoration: none;
    color: #ff0;
}
h1{
    color: #f00;
}
.page_top_btn:hover h1{
    color: #0f0;
}
a{
    text-decoration: none;
    color: #06f;
}
a:hover{
    text-decoration: none;
    color: #f60;
}