.drawer button {
  display: block;
  background: #eb8c8d;
  width: 100%;
  font-size: 15px;
  line-height: 15px;
  padding: 8px 0 11px;
  border: 0;

  outline: 0;

  -webkit-transition: right .5s cubic-bezier(0.2, 1.0, 0.2, 1.0);
  transition: right .5s cubic-bezier(0.2, 1.0, 0.2, 1.0);

  -webkit-transform: translate3d(0, 0, 0);
  transform: translate3d(0, 0, 0);

  position: fixed;
  bottom: 0;
  left: 0;
  z-index: 9999;
  box-sizing: content-box;

  cursor: pointer;
}

.drawer button font {
  display: inline-block;
  color: #ffffff;
  vertical-align: -5px;
  padding-left: 0.5em;
}
.drawer button span {
  display: inline-block;
  position: relative;
}
.drawer button span,
.drawer button span:before,
.drawer button span:after {
  background: #ffffff;
  width: 18px;
  height: 1px;

  -webkit-transition: all .5s cubic-bezier(0.2, 1.0, 0.2, 1.0);
  transition: all .5s cubic-bezier(0.2, 1.0, 0.2, 1.0);
}
.drawer button span:before,
.drawer button span:after {
  position: absolute;
  left: 0;
  content: '';
}
.drawer button span:before {
  top: -5px;
}
.drawer button span:after {
  top: 5px;
}

.drawer-open .drawer-nav {
  right: 0;
}
.drawer-open button span {
  background: transparent;
}
.drawer-open button span:before,
.drawer-open button span:after {
  top: 0;
}
.drawer-open button span:before {
  -webkit-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  transform: rotate(45deg);
}
.drawer-open button span:after {
  -webkit-transform: rotate(-45deg);
  -ms-transform: rotate(-45deg);
  transform: rotate(-45deg);
}


.drawer-nav {
/*
  background: rgba(255, 255, 255, 0.9);
*/
  width: 100vw;
  cheight: 100%;
  text-align: center;
  box-sizing: content-box;
  box-sizing: border-box;

  position: fixed;
  right: -100vw;
  bottom: 0;
  z-index: 9998;
  overflow: hidden;

  -webkit-transition: right .5s cubic-bezier(0.2, 1.0, 0.2, 1.0);
  transition: right .5s cubic-bezier(0.2, 1.0, 0.2, 1.0);
}


.drawer-overlay {
  display: none;
  background: rgba(255, 255, 255, 0.95);
  width: 100%;
  height: 100%;

  position: fixed;
  top: 0;
  left: 0;
  z-index: 9997;
}
.drawer-open .drawer-overlay {
  display: block;
}