body{background-color:#fff;color:#000;font-family:Hiragino sans}h1{font-size:medium;margin:1rem auto;padding:0 1rem;text-align:center}.light-theme{background-color:#ffd0eb;color:crimson}.dark-theme{background-color:#000;color:#fff}.dark-theme .list-group-item{background-color:#333;color:#fff}@media (min-width:600px){button.btn_02{background:crimson;border:2px solid crimson;color:#fff;display:block;font-weight:700;margin:auto;padding:1rem 4rem;position:absolute;right:10px;text-align:center;text-decoration:none;top:5px;transition:.5s;width:400px}button.btn_02:hover{background:#fff;color:#0055f4}}@media (max-width:599px){button.btn_02{background:crimson;border:2px solid crimson;color:#fff;display:block;font-weight:700;margin:auto;padding:1rem 4rem;text-decoration:none;transition:.5s;width:200px}}