:root {
    --white: #FDFDF3;
    --dark: #0b0b0b;
    --black: #000;
}

body {
    margin: 0;
    padding: 0;
    height: 100vh;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    background-color: var(--dark);
}

main {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.eyes {
    position: relative;
    width: 400px;
    height: 120px;
    -webkit-transform: translate(0, -40px);
    -moz-transform: translate(0, -40px);
    -ms-transform: translate(0, -40px);
    -o-transform: translate(0, -40px);
    transform: translate(0, -40px);
}

.eye {
    position: absolute;
    width: 120px;
    height: 80px;
    top: 0;
    border-radius: 50% 50% 50% 50%/60% 60% 40% 40%;
    background-color: var(--white);
    overflow: hidden;
    border: solid var(--dark) 10px;
    box-shadow: 0px 10px 0px 10px rgba(0, 0, 0, .2) inset;
}

#left {
    left: 0;
}

#right {
    right: 0;
}

.iris {
    position: absolute;
    width: 80px;
    height: 80px;
    background-color: var(--dark);
    border-radius: 50%;
    top: 40px;
    left: 60px;
    -webkit-transform: translate(-40px, -40px);
    -moz-transform: translate(-40px, -40px);
    -ms-transform: translate(-40px, -40px);
    -o-transform: translate(-40px, -40px);
    transform: translate(-40px, -40px);
}

h1 {
    color: var(--white);
    font-size: 2.5em;
}

a {
    color: var(--white);
    text-decoration: none;
}

p {
    color: var(--white);
    font-size: 1em;
    font-style: italic;
}

.btn {
    cursor: pointer;
    position: relative;
    padding: 10px 20px;
    font-size: 28px;
    border-top-right-radius: 10px;
    border-bottom-left-radius: 10px;
    transition: all 1s;

    &:after,
    &:before {
        content: " ";
        width: 10px;
        height: 10px;
        position: absolute;
        border: 0 solid var(--white);
        transition: all 1s;
    }

    &:after {
        top: -1px;
        left: -1px;
        border-top: 5px solid var(--white);
        border-left: 5px solid var(--white);
    }

    &:before {
        bottom: -1px;
        right: -1px;
        border-bottom: 5px solid var(--white);
        border-right: 5px solid var(--white);
    }

    &:hover {
        border-top-right-radius: 0;
        border-bottom-left-radius: 0;

        &:before,
        &:after {
            width: 100%;
            height: 100%;
        }
    }
}

.data-container {
    height: 100vh;
    scale: 2;
    display: flex;
    justify-content: center;
    align-items: center;
}

@media (max-width: 576px) {
    .eyes {
        width: 80%;
    }

    .eye {
        width: 90px;
        height: 60px;
    }

    .iris {
        width: 65px;
        height: 65px;
    }
}