* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.container {
    width: 60%;
    margin: auto;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

#lightbox {
  position: fixed;
  z-index: 1000;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
}


.slider {
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
    height: 100vh;
    width: 100vh;
    position: relative;
    overflow: hidden;
    margin-top: 50PX;
  }
  
  .slide {
    opacity: 0;
    height: 500px;
    width: 100%;
    background-position: center center;
    background-size: cover;
    position: absolute;
    transition: 0.4s ease;
    z-index: 10001;
  }
  
  .slide.active {
    opacity: 1;
  }
  
.prevBtn {
    position: absolute;
    color: #fff;
    text-shadow: 4px 0 0 #333, 0 -2px 0 #333, 0 2px 0 #333, -2px 0 0 #333;
    font-size: xx-large;
    font-weight: bolder;
    top: 50%;
    left: 22%;
    cursor: pointer;
    z-index: 10001;
}

.nextBtn {
    position: absolute;
    color: #fff;
    text-shadow: 4px 0 0 #333, 0 -2px 0 #333, 0 2px 0 #333, -2px 0 0 #333;
    font-size: xx-large;
    font-weight: bolder;
    top: 50%;
    right: 22%;
    cursor: pointer;
    z-index: 10001;
}

li {
  list-style-type: none;
  list-style: none;
}

.main-menu {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-left: 750px;
}

.main-menu li {
  font-size: 18px;
  font-weight: bolder;
  margin: 30px 0px 30px 100px;
  text-transform: uppercase;
  z-index: 50;
}

.main-menu li a {
  color: #fff;
}


.main-menu li a:hover {
  opacity: 0.5;
  transition: opacity 0.3s;
}

.hiddenMenu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  transform: translateY(-100%);
  transition:  all 2s linear;
  z-index: 100;
  opacity: 0;
}

.hiddenMenu.active {
  transform: translateY(0);
  opacity: 1;
  transition: all 2s;
}

.hiddenMenu ul {
position: relative;
}

.hiddenMenu ul li {
 text-align: center;
 margin: 35px 0;
 display: block;
}

.hiddenMenu ul li a {
 font-size: 3.5em;
 padding: 0 10px;
 color: cornflowerblue;
 z-index: 10;
 font-weight: 800;
 text-transform: uppercase;
 display: inline-block;
 text-decoration: none;
}

.hiddenMenu ul li a:hover {
   opacity: .7; /*need to fix*/
}

.logo {
  position: fixed;
  line-height: 24px;
  font-weight: bolder;
  font-size: 40px;
  background-color: cornflowerblue;
  color: #fff;
  padding: 30px 40px;
  z-index: 200;
  cursor: pointer;
  top: 0;
  left: 0;
}

.logo i {
  margin-right: 10px;
}

/* Mobile */ 
@media(max-width: 500px)  {
  .slide {
      width: 100%;
      height: 350px;
      margin-top: 20px;
  }

 .prevBtn i {
    transform: translate(-40px,-70px);
  }

 .nextBtn i {
    transform: translate(40px,-70px);
 }

}