@mixin keep-left {
  clear: none;
  float: left;
}

@mixin keep-right {
  clear: none;
  float: right;
}

@mixin keep-center {
  margin-left: auto;
  margin-right: auto;
}

@mixin keep-vertical-center {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

@mixin keep-horizontal-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

@mixin keep-full-center ($extra-transform-values...) {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate3d(-50%, -50%, 0) $extra-transform-values;
}

@mixin no-keep {
  float: none;
  margin-left: 0;
  margin-right: 0;
}