.imageview {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  right: 0;
  background-color: #0004;
  backdrop-filter: blur(5px);
  overflow: hidden;
  opacity: 1;
  animation-name: fadein;
  animation-duration: .25s;
  animation-timing-function: linear;
  animation-iteration-count: 1;
  transition: .25s;
  z-index: 100000;
}

.imageview::before {
  content: "image viewer from 「info.drk.st」";
  color: #FFF1;
  font-size: 14px;
  line-height: 16px;
  right: 16px;
  bottom: 16px; 
  position: absolute;
}

.imageview .imageview_close {
  background: #0004;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  right: 16px;
  top: 16px;
  position: fixed;
  cursor: pointer;
  z-index: 10;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.imageview .imageview_close::before {
  font-family: "material icons";
  color: #FFF;
  font-size: 32px;
  height: 32px;
  line-height: 32px;
  content:"\e888";
}

.imageview_cover {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  right: 0;
  overflow: scroll;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

.imageview .author {
  position: fixed;
  left: 0;
  bottom: 16px;
  right: 0;
  font-size: 16px;
  font-weight: bold;
  color: #FFF;
  line-height: 48px;
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
}

.imageview .author a[href]:before {
  content: "Author";
  color: #FFF;
  display: inline-block;
  margin-right: 10px;
}

.imageview .author a {
  backdrop-filter: blur(10px);
  color: #FFF;
  background: #0008;
  border-radius: 24px;
  user-select: text;
  padding: 0 24px
}

.imageview .author a[href] {
  color: #09F
}

.imageview .author a:visited {
  color: #0C0
}

.left-arrow-btn,
.right-arrow-btn {
  position: fixed;
  z-index: 10;
  left: 8px;
  top: calc(50% - 24px);
  cursor: pointer;
  height: 48px;
  width: 48px;
  border-radius: 24px;
  background: #0008;
  backdrop-filter: blur(10px);
  background-image: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAxNiAxNiIgd2lkdGg9IjE2IiBoZWlnaHQ9IjE2Ij48cGF0aCBkPSJNOS43OCAxMi43OGEuNzUuNzUgMCAwIDEtMS4wNiAwTDQuNDcgOC41M2EuNzUuNzUgMCAwIDEgMC0xLjA2bDQuMjUtNC4yNWEuNzUxLjc1MSAwIDAgMSAxLjA0Mi4wMTguNzUxLjc1MSAwIDAgMSAuMDE4IDEuMDQyTDYuMDYgOGwzLjcyIDMuNzJhLjc1Ljc1IDAgMCAxIDAgMS4wNloiIGZpbGw9IiNGRkYiPjwvcGF0aD48L3N2Zz4=");
  background-repeat: no-repeat;
  background-size: 32px;
  background-position: center
}

.right-arrow-btn {
  left: auto;
  right: 8px;
  transform: rotate(180deg)
}

.left-arrow-btn.disable,
.right-arrow-btn.disable {
  opacity: .5;
  cursor: not-allowed
}