.button a{
    position: relative;
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin: auto;
    max-width: 250px;
    padding: 10px 25px;
    color: #333;
    font-family: "Noto Sans Japanese",sans-serif;
    text-decoration: none;
    color: #333;
    line-height: 1.8;
    transition: 0.3s ease-in-out;
    font-weight: 500;
    background: #eee;
    border-radius: 9999px;
    border-bottom: 2px solid #999;
    box-shadow: 0 2px 7px rgba(0, 0, 0, .3);
    -webkit-box-shadow: 0 2px 7px rgba(0, 0, 0, .3);
}
.button a:hover {
    color: #fff;
    background: #999;
    border-bottom: 2px solid #fff;
    transform: translateY(3px);
}

body {
  font-family: "Noto Sans Japanese",sans-serif;
  }