:root {
    --variable: 4px;
    --variablex1: calc(var(--variable) * 1);
    --variablex2: calc(var(--variable) * 2);
    --variablex4: calc(var(--variable) * 4);
    --line-height: 1.2;
}

@media screen and (min-width: 992px) {}

@media screen and (max-width: 600px) {
    :root {
        --variable: 3.5px;
    }
}

@media screen and (max-width: 320px) {
    :root {
        --variable: 3px;
    }
}

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

}

html {
    -webkit-text-size-adjust: 100%;
    -webkit-overflow-scrolling: touch;
}

body {
    background-color: #0000ff;
    color: #fff;
    font: 100 var(--variablex4)/var(--line-height) 'Helvetica', 'Arial', sans-serif;
}

/* safe-area */
body {
        padding-top: env(safe-area-inset-top);
        padding-right: env(safe-area-inset-right);
        padding-bottom: env(safe-area-inset-bottom);
        padding-left: env(safe-area-inset-left);
}

a {
    text-decoration: none;
    color: unset;
}

html,
body {
    height: 100%;
}

.header {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--variablex4);
    height: calc(99% - ((var(--variablex2) * 2) + (var(--variablex2) * var(--line-height))));
}

.content {
    height: 1%;
}

p {
    text-align: center;
    max-width: 25em;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 1em;
}

p:last-of-type {
    margin-bottom: 0;
}

.footer {
    padding: var(--variablex2);
    text-align: center;
}

.copyright {
    font-size: var(--variablex2);
}

.e {
    font-family: 'Georgia', serif;
    font-style: italic;
}

.mail {
    font-family: 'Courier New', monospace;
}

/* tracking animation */

.tracking {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #0000ff;
    opacity: 1;
    animation: fade linear 0.5s;
    animation: fade linear 0s;
    animation-iteration-count: 1;
    animation-fill-mode: forwards;
    animation-delay: 0.66s;
    z-index: 99;
}

.tracking video {
    width: 100%;
    height: 100%;
    object-fit: fill;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
}

@keyframes fade {
    0% {
        opacity: 1;
    }

    100% {
        opacity: 0;
        visibility: hidden;
    }
}

/* tracking animation */

.overlay {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-color: #0000ff;
    animation: overlay linear 0.5s;
    animation: overlay linear 0s;
    animation-iteration-count: 1;
    animation-fill-mode: forwards;
    animation-delay: .66s;
    z-index: 98;
}


@keyframes overlay {
    0% {
        opacity: 1;
    }

    100% {
        opacity: 0;
        visibility: hidden;
    }
}