@import url('https://fonts.googleapis.com/css?family=Nunito:300,400,600,700&display=swap');
body {
      margin: 0;
      padding: 0;
      width: 100%;
      height: 100vh;
}

body {
      background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url(owl.jpg);
      width: 100%;
      background-size: cover;
      font-family: 'Nunito', sans-serif;
      background-position: center;
}

h1 {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      color: #fff;
      font-weight: bolder;
      text-align: center;
}

.menu-overlay {
      position: absolute;
      width: 100%;
      height: 100vh;
}

.block {
      position: absolute;
      width: 0%;
      height: 100vh;
      background:  rgba(0,0,0,0.9);
}

.b1 {
      left: 0;
}

.b2 {
      left: 25%;
}

.b3 {
      left: 50%;
}

.b4 {
      left: 75%;
}

.strip {
      position: absolute;
      width: 1px;
      height: 100vh;
      background: rgba(255, 255, 255, 0.46);
}

.one {
      left: 25%;
}

.two {
      left: 50%;
}

.three {
      left: 75%;
}

ul {
      margin: 0;
      padding: 0;
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      text-align: center;
      z-index: 1;
      list-style: none;
}

li {
      padding: 12px 0;
      color: #fff;
      font-size: 36px;
      font-weight: 500;
}
ul li a{
      text-decoration: none;
      color:#fff;
      transition: all .5s;
}
ul li a:hover{
      color:#00bcd4;
}
.menu-btn {
      position: fixed;
      right: 0;
      margin: 1.2em;
      cursor: pointer;
}

.menu-btn i {
      padding: 1.2em;
      color: #fff;
      background: #00bcd4;
      border-radius: 50%;
}