style.css

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

body {
    height: 100vh;
    width: 100vw;
}

.background {
    height: 100vh;
    width: 100vw;
    background-color: skyblue;
}

.baby {
    height: 117.1px;
    width: 67px;
    position: fixed;
    top: 40vh;
    left: 30vw;
    z-index: 100;
}

.pipe_sprite {
    position: fixed;
    top: 40vh;
    left: 100vw;
    height: 70vh;
    width: 6vw;
    background-color: green;
}

.message {
    position: fixed;
    z-index: 10;
    height: 10vh;
    font-size: 10vh;
    font-weight: 100;
    color: black;
    top: 12vh;
    left: 20vw;
    text-align: center;
}

.score {
    position: fixed;
    z-index: 10;
    height: 10vh;
    font-size: 10vh;
    font-weight: 100;
    color: goldenrod;
    top: 0;
    left: 0;
}

.score_val {
    color: gold;
}

.bottom,
.top {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.bottom {
    justify-content: flex-start;
    padding-top: 5%;
}

.top {
    justify-content: flex-end;
    padding-bottom: 5%;
}

p {
    font-size: 200%;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    color: yellow;
    text-shadow:
        3px 3px 0 #000,
        -3px 3px 0 #000,
        -3px -3px 0 #000,
        3px -3px 0 #000;
}