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

body{
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: black;
    color: #fff;
    font-family: 'roboto', sans-serif;
}

.heading{
    font-size: 100px;
/*    text-transform: uppercase;*/
}

/* links */

.links-container{
    width: 100%;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    display: flex;
    opacity: 1;
    pointer-events: all;
    transition: .5s;
}

.links-container.hide{
    opacity: 0;
    pointer-events: none;
}

.link{
    position: relative;
    width: 20%;
    height: 100%;
    overflow: hidden;
}

.link img{
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: .5s;
}

.link:hover img{
    transform: rotate(-2deg) scale(1.1);
}

.link::after{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    opacity: 0;
    transition: .5s;
}

.link:hover::after{
    opacity: 0.4;
}

.link p{
    color: #fff;
    position: absolute;
    bottom: 270px;
    right: -120px;
    width: 150%;
    height: 30px;
    text-transform: uppercase;
    font-size: 50px;
    transform: rotate(-90deg);
}

/* toggle-btn */

.toggle-btn{
    width: 50px;
    height: 50px;
    position: fixed;
    right: 20px;
    top: 20px;
    background: #2f2f2f;
    border-radius: 50%;
    z-index: 99;
    cursor: pointer;
}

.toggle-btn span{
    position: absolute;
    width: 50%;
    height: 2px;
    background: #fff;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: .5s;
}

.toggle-btn span:nth-child(2){
    top: 60%;
}

.toggle-btn.active span{
    top: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
}

.toggle-btn.active span:nth-child(2){
    transform: translate(-50%, -50%) rotate(-45deg);
}