html {
  height: 100%;
  padding: 0;
  margin: 0;
}
body {
  height: 100%;
  overflow: hidden;
  padding: 0;
  margin: 0;
}
#app {
  height: 100%;
}
.preview-header {
  height: 52px;
  padding-left: 50px;
  background-color: #ffffff;
  background-image: initial;
  min-width: 700px;
  box-shadow: 0 2px 8px #f0f1f2;
  z-index: 110;
  position: relative;
}
#previewFileName {
  float: left;
  padding-top: 15px;
  font-size: 16px;
  max-width: 580px;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  cursor: default;
}
.operation {
  float: right;
  padding-top: 10px;
  padding-right: 20px;
}
.preview-container {
  margin: 0 auto;
  height: calc(100% - 52px);
}
iframe {
  border: 0;
  height: 100%;
  width: 100%;
}
.svg-icon {
  width: 18px;
  height: 18px;
  fill: #44474D;
}
.download, #onlineEdit, .zoom {
  display: inline-block;
  background-color: #FFFFFF;
  border: 1px solid #D9D9D9;
  border-radius: 4px;
  color: #44474D;
  font-size: 16px;
  padding: 8px 16px;
  cursor: pointer;
  -webkit-transition: all .5s;
  transition: all .5s;
}