body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Red Hat Display', sans-serif;
    background: #eee;
}

section {
    height: 100vh;
    background: url('../media/img/404-background.jpg') no-repeat center;
    background-size: cover;
    animation: bg 1.5s ease-in-out;
    overflow: hidden;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: flex-end;
}

.content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 3em 1em;
    color: #fff;
}

.content h2, .content p {
    margin: 0;
}

.content p {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0.3em 0 3em 0;
    color: #dbdbdb;
}

.content a {
    color: #000;
    text-decoration: none;
    background: #fff;
    padding: 0.7em 2em;
    border-radius: 3em;
    transition: 0.4s;
}

.content a:hover {
    background: #000;
    color: #fff;
}

.heading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

section::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    background: url('../media/img/background-bottom-404.png') no-repeat center;
    width: 100vw;
    background-size: cover;
    animation: bg2 1.5s ease-in-out;
    overflow: hidden;
    height: 60%;
    z-index: 2;
}

section h1 {
    color: rgba(255, 255,255, 0.8);
    font-size: 9em;
    position: absolute;
    top: 130px;
    z-index: 1;
}

@media screen and (max-height: 560px) {
    section {
        height: 40em;
    }
}

@media screen and (max-width: 560px) {
    section {
        font-size: 14px;
    }
}

@media screen and (min-width: 1050px) {
    section {
        font-size: 18px;
    }
}

@keyframes bg {
    0% {
        background-position: center -5em;
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {background-position: center;}
}

@keyframes bg2 {
    0% {
        background-position: center 10em;
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {background-position: center;}
}