body{
    margin: 0;
    padding: 0;
    font-family: sans-serif;
}
h1{
    color: white;
    line-height: 1;
    letter-spacing: 0.211em;
    font-size: 34px;
}
header{
    min-height: 100vh;
    display: grid;
    place-items: center;
}
.preloader{
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: white;
    display: grid;
    justify-content: center;
    align-items: center;
    z-index: 1;
    transform: 0.3s linear;
}
.background-video{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    filter: brightness(30%);
}