/* Universal Selector */

* {
    box-sizing: border-box;
}

/* Body */

body {
    background: #0b3747 url('https://iili.io/FrYE9uj.jpg') no-repeat center center/cover;
    color: rgba(255, 255, 255, 0.87);
    font-family: "Poppins", sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 100vh;
    overflow: hidden;
    margin: 0;
}

body:after {
    content: '';
    background-color: rgba(0, 0, 0, 0.5);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

body * {
    z-index: 1;
}

/* Birthday Countdown */

h1 {
    font-size: 2.75rem;
    margin: -100px 0 30px;
}

.year {
    font-size: 12rem;
    z-index: -1;
    opacity: 0.2;
    position: absolute;
    top: 1.25rem;
    left: 50%;
    transform: translateX(-50%);
}

.countdown {
    display: none;
    transform: scale(2);
}

.time {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0.25rem;
}

.time h2 {
    font-size: 0.75rem;
    margin: 0;
}

.time p {
    font-size: 0.75rem;
    margin: 0;
    padding: 0;
}

/* Responsive */

@media(min-width: 640px) {

    h1 {
        font-size: 3.5rem;
    }

    .time {
        margin: 1rem;
    }

    .time h2 {
        font-size: 1.5rem;
        margin: 0 0 5px;
    }

    .time p {
        font-size: 1rem;
    }

}