/*https://codepen.io/anon/embed/PJGqdE?height=500&theme-id=1&slug-hash=PJGqdE&default-tab=result#result-box shoutout*/

html, body {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}
.untitled {
    position: absolute;
    height: 100%;
    width: 100%;
    animation-delay: 0.625s;
    z-index: 1;
}

.sidebar {
    width: 30%;
    padding: 150px 0 0 40px;
    z-index: 2;
}

.untitled__shutters {
    position: absolute;
    height: 150vmax;
    width: 150vmax;
    left: calc(50% - 75vmax);
    top: calc(50% - 75vmax);
    pointer-events: none;
    z-index: 2;
    animation: rotateFrame 10s linear infinite;
}

@keyframes rotateFrame {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(180deg);
    }
}
.untitled__shutters:before, .untitled__shutters:after {
    content: '';
    position: absolute;
    height: 100%;
    width: 100%;
    left: 50%;
    transform: translate3d(-50%, 0, 0);
    background-color: #00c3ff;
    pointer-events: auto;
}
.untitled__shutters:before {
    bottom: 50%;
    animation: openTop 5s infinite;
}

@keyframes openTop {
    0% {
        transform: translate3d(-50%, 0, 0);
        animation-timing-function: cubic-bezier(0.8, 0, 0.1, 1);
    }
    40% {
        transform: translate3d(-50%, -65vmax, 0);
        animation-timing-functon: cubic-bezier(0.6, 0.04, 0.98, 0.335);
        background-color: #00c3ff7d;
    }
    70% {
        transform: translate3d(-50%, -65vmax, 0);
        animation-timing-functon: cubic-bezier(0.6, 0.04, 0.98, 0.335);
    }
    100% {
        transform: translate3d(-50%, 0, 0);
        animation-timing-function: cubic-bezier(0.6, 0.04, 0.98, 0.335);
    }
}
.untitled__shutters:after {
    top: 50%;
    animation: openBottom 5s infinite;
}
@keyframes openBottom {
    0% {
        transform: translate3d(-50%, 0, 0);
        animation-timing-function: cubic-bezier(0.8, 0, 0.1, 1);
    }
    40% {
        transform: translate3d(-50%, 65vmax, 0);
        animation-timing-functon: cubic-bezier(0.6, 0.04, 0.98, 0.335);
        background-color: #00c3ff7d;
    }
    70% {
        transform: translate3d(-50%, 65vmax, 0);
        animation-timing-functon: cubic-bezier(0.6, 0.04, 0.98, 0.335);
    }
    100% {
        transform: translate3d(-50%, 0, 0);
        animation-timing-function: cubic-bezier(0.6, 0.04, 0.98, 0.335);
    }
}
.untitled__slides {
    position: absolute;
    height: 100%;
    width: 100%;
    top: 0;
    left: 0;
}
.untitled__slide {
    position: absolute;
    height: 100%;
    width: 100%;
    opacity: 0;
    animation: showHideSlide infinite 20s steps(1);
}
@keyframes showHideSlide {
    0% {
        opacity: 1;
        pointer-events: auto;
        z-index: 1;
    }
    25% {
        opacity: 0;
        pointer-events: none;
        z-index: -1;
    }
    100% {
        opacity: 0;
        pointer-events: none;
        z-index: -1;
    }
}
.untitled__slide:nth-child(1) {
    animation-delay: 0s;
}
.untitled__slide:nth-child(1) .untitled__slideBg {
    background-image: url(https://source.unsplash.com/random/900×700/?smile,babies);
}
.untitled__slide:nth-child(2) {
    animation-delay: 5s;
}
.untitled__slide:nth-child(2) .untitled__slideBg {
    background-image: url(https://source.unsplash.com/random/900×700/?nature);
}
.untitled__slide:nth-child(3) {
    animation-delay: 10s;
}
.untitled__slide:nth-child(3) .untitled__slideBg {
    background-image: url(https://source.unsplash.com/random/900×700/?food);
}
.untitled__slide:nth-child(4) {
    animation-delay: 15s;
}
.untitled__slide:nth-child(4) .untitled__slideBg {
    background-image: url(https://source.unsplash.com/random/900×700/?programming,clumsy);
}

.untitled__slideBg {
    position: relative;
    height: 100%;
    width: 100%;
    top: 0;
    left: 0;
    background-size: cover;
    background-position: top;
    opacity: 1;
    z-index: -1;
    background-repeat: no-repeat;
}

.untitled__slideContent {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate3d(-50%, -50%, 0);
    color: white;
    font-family: var(--body-font);
    line-height: 0.8;
    letter-spacing: -0.025em;
    z-index: 2;
    opacity: 1;
    text-shadow: 0 0 0.5em rgba(179, 64, 26, 0.25);
    background: linear-gradient(180deg, #00c3ff7d, #59566b12);
    padding: 20px;
}
.untitled__slideContent span {
    display: block;
    font-size: 15vmin;
}
.button {
    font-family: 'Roboto Mono', sans-serif;
    text-decoration: none;
    font-weight: 800;
    text-transform: uppercase;
    font-size: 2vmin;
    display: inline-block;
    position: relative;
    border: 3px solid white;
    box-shadow: -0.5vmin 0.5vmin 0 rgba(255, 255, 255, 0.5);
    background: transparent;
    margin-top: 5vmin;
    mix-blend-mode: lighten;
    color: white;
    padding: 2vmin 2vmin 1.8vmin 2vmin;
    letter-spacing: 0.1em;
    text-shadow: none;
    line-height: 1;
    transform: translate3d(0.5vmin, -0.5vmin, 0);
    transition: all 100ms linear;
}
.button:hover {
    transform: translate3d(1vmin, -1vmin, 0);
    box-shadow: -1vmin 1vmin 0 rgba(255, 255, 255, 0.5);
    background: white;
    color: black;
}
.button:active {
    transform: translate3d(0px, 0px, 0);
    box-shadow: 0px 0px 0 rgba(255, 255, 255, 0.5);
}