.burger {
  width: 44px;
  height: 44px;
  position: relative;
  display: inline-block;
  font-size: 0;
}

/*
  lines
  ***
 */

.burger-lines, .burger-lines:before, .burger-lines:after {
  width: 26px;
  height: 2px;
  position: absolute;
  background-color: #000;
  -webkit-transition: 150ms;
  -o-transition: 150ms;
  transition: 150ms;
}
.burger-lines {
  left: 9px;
  top: 50%;
  margin-top: -1px;
}
.burger-lines:before, .burger-lines:after {
  content: '';
}
.burger-lines:before {
  top: -8px;
}
.burger-lines:after {
  bottom: -8px;
}

/* actions */

.burger.is-active .burger-lines {
  background-color: transparent;
}
.burger.is-active .burger-lines:before, .burger.is-active .burger-lines:after {
  background-color: #e14a4a;
}
.burger.is-active .burger-lines:before {
  top: 0;
  -webkit-transform: rotate(45deg);
      -ms-transform: rotate(45deg);
          transform: rotate(45deg);
}
.burger.is-active .burger-lines:after {
  bottom: 0;
  -webkit-transform: rotate(-45deg);
      -ms-transform: rotate(-45deg);
          transform: rotate(-45deg);
}