#menu__toggle {
  opacity: 0;
}

#menu__toggle:checked ~ .menu__btn > span {
  transform: rotate(45deg);
}
#menu__toggle:checked ~ .menu__btn > span::before {
  top: 0;
  transform: rotate(0);
}
#menu__toggle:checked ~ .menu__btn > span::after {
  top: 0;
  transform: rotate(90deg);
}
#menu__toggle:checked ~ .menu__box {
  visibility: visible;
  left: 55%;
  width: 135px;
  z-index: 501;
}

.menu__btn {
  display: flex;
  align-items: center;
  position: absolute;
  top: 50px;
  left: auto;
  transform: translate(53px, -46px);
  width: 26px;
  height: 26px;
  color: #fff;
  cursor: pointer;
  z-index: 502;
  background-color: #fa3228;
}

.menu__btn > span,
.menu__btn > span::before,
.menu__btn > span::after {
  display: block;
  position: absolute;

  width: 100%;
  height: 2px;

  background-color: #fff;

  transition-duration: .25s;
}
.menu__btn > span::before {
  content: '';
  top: -8px;
}
.menu__btn > span::after {
  content: '';
  top: 8px;
}

.menu__box {
  z-index: 501;
  display: block;
  position: absolute;
  visibility: hidden;
  top: 0;
  left: -1000%;

 /* width: 300px;
  height: 100%;*/

  margin: -7px 0px 0px 0px;
  padding: 37px 0px 11px 0;

  list-style: none;

  background-color: #fff;
 border: 4px double #000000;
  box-shadow: 1px 0px 6px rgba(0, 0, 0, .2);

  transition-duration: .25s;
}

.menu__item {
  /*display: block;*/
  padding: 0px 12px;

  color: #000;

  font-family: 'Open Sans';
  font-size: 14px;
  /*font-weight: 600;*/

  text-decoration: none;
  line-height: 1.5;
  transition-duration: .25s;
}
.menu__item:hover {
  background-color: #CFD8DC;
}