@font-face {
    font-family: 'Helvetica';
    src: url(../fonts/HelveticaNeue\ Regular.ttf);
}

@font-face {
    font-family: 'Helvetica Bold';
    src: url(../fonts/HelveticaNeueBold.otf);
}


*{
    box-sizing: border-box;
    padding: 0;
    margin: 0;
    color: #f4f2dd;
    font-family: 'Helvetica';
    font-size: 18px;
    text-decoration: none;
}

html, body{
    width: 100%;
    height: 100%;
}

body{
    background-color: #000;
}

main {
    display: flex;
    width: 100%;
    height: 100%;
}

section{
    opacity: 0;
    transition: 0.4s;
    position: absolute;
    z-index: -1;
    overflow: hidden;
}

section.active{
    z-index: 1;
}

.active{
    opacity: 1;
}