html {
    background-color: rgb(241, 241, 241);
    font-family: sans-serif;
}

body {
    margin: auto;
    padding: 20px;
    max-width: 480px;
    text-align: left;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: 1.7;
    color: rgb(27, 26, 26);
}
img {
    max-width: 100%;
    height: auto;
}

#ope {
    margin-left : 16px;
}

hr {
    margin-top: 20px;
    margin-bottom: 20px;
    border-top: 1px dashed #8c8b8b;
}

blockquote {
    border-left: 3px solid #999;
    color: rgb(71, 71, 71);
    padding: 2px 0px 2px 20px;
    margin: 0px;
    font-style: italic;
}

input[type="range"] {
  width: 50%;
}

.no_scroll {
  position: fixed;
  left: 0;
  right: 0;
  overflow: hidden;
}

.slider {
    margin-top: 6px;
}