.viewer-toolbar>ul>li {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* コントローラーのいらん部分 */
.viewer-zoom-in,
.viewer-zoom-out,
.viewer-reset,
.viewer-rotate-left,
.viewer-rotate-right,
.viewer-flip-horizontal,
.viewer-flip-vertical,
.viewer-one-to-one {
    display: none !important;
}

.viewer-title {
    margin: 10px 5%;
    font-size: clamp(12px, 1vw, 14px);
}

.viewer-button {
  width: clamp(3.125rem, 2.75rem + 1.88vw, 5rem) !important;
  height: clamp(3.125rem, 2.75rem + 1.88vw, 5rem) !important;
  right: 10px !important;
  top: 10px !important;
}
.viewer-button::before{
  top: 50% !important;
  left: 50% !important;
  transform: translateY(-50%) translateX(-50%);
  -webkit-transform: translateY(-50%) translateX(-50%);
}