angular-backtop/src/less/main.less

.

@import 'themes/light.less';
@import 'themes/dark.less';
@import 'themes/bootstrap.less';
#backtop {
  opacity: 0;
  transition: all .3s ease-out;
  position: fixed;
  z-index: 9999;
  button {
    outline: none;
    border: 0;
    &:hover {
      cursor: pointer;
    }
  }
}

.show {
  opacity: 1 !important;
}