@charset "UTF-8";
/* CSS Document */
#toggle {
    position: fixed;
    top: 25px;
    right: 25px;
}

#toggle-box {
    position: relative;
    width: 36px;
    height: 32px;
    cursor: pointer;
}

#toggle-box > span {
  width: 100%;
  height: 1px;
  left: 0;
  display: block;
  background: #000;
  position: absolute;
  transition: transform .6s ease-in-out, top .5s ease, bottom .5s ease;
}

#toggle-box > span:nth-child(1) {
    top: 0;
}

#toggle-box > span:nth-child(2) {
    top: 50%;
    transform: translatey(-40%);
}


#toggle-box > span:nth-child(3) {
  bottom: 0;
}

#toggle {
    z-index: 1000;
}
#contents {
    position: relative;  
    z-index: 990;
}

#nav-content {
    z-index: 900;
    overflow: auto;
    width: 30%;
    height: 100%;
    background: #000;
    color: #fff;
    position: fixed;
    top: 0;
    right: 0;
    text-align: center;
    transform: translateX(100%);
    transition:  transform 0.5s cubic-bezier(0.215, 0.61, 0.355, 1);
}

#nav-content ul {
  list-style: none;
}

#nav-content a {
  display: block;
  color: #fff;
  text-decoration: none;
  padding: 30px 0;
  transition: opacity .6s ease;
}

#nav-content a:hover {
  opacity: 0.6;
}

.is-open {
    overflow: hidden;
}

.is-open #toggle-box > span {
    background: #fff;
}

.is-open #toggle-box > span:nth-child(1) {
  top: 50%;
  transform: rotate(45deg) translatey(-50%);
}

.is-open #toggle-box > span:nth-child(2) {
  width: 0;
}

.is-open #toggle-box > span:nth-child(3) {
  top: 50%;
  transform: rotate(-45deg) translatey(-50%);
}

.is-open #nav-content {
  z-index: 999;
  transform: translateX(0);
}

.overlay {
  background: rgba(0,0,0,0.5);
  height: 100vh;
}
@media screen and (max-width: 480px) {
#nav-content {width: 50%;}
}