page{
height: 100%
}
.cropper{
  position: absolute;
  top: 0;
  left: 0;
}
.tip{
  position: fixed;
  color: #888;
  font-size: 15px;
  left: 50%;
  top: 45%;
  transform: translateX(-50%);
}

.operations{
  position: fixed;
  bottom: 0;
  width: 100%;
  height: 42px;
  transform: translateX();
}
.operations>button{
  flex: auto;
  border-radius: 0;
  white-space: nowrap;
  display: flex;
  justify-content: center;
  align-items: center;  
}