@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

html {
    height: 100%;
    width: 100%;
}

body {
    margin: 0;
    overflow: hidden;
    text-align: center;
    font-family: 'Press Start 2P', cursive;
    user-select: none;
    max-height: 100%;
}
header {
    margin: 0 auto;
    width: 431px;
}
h1 {
    background: url("https://i.ibb.co/Q9yv5Jk/flappy-bird-set.png") 0% 340px;
    padding: 1.2rem 0;
    margin: 0;
}
.score-container {
    display: flex;
    font-size: 11px;
    justify-content: space-between;
    padding: 8px 6px;
    background: #5EE270;
    color: #545454;
}

.score-container span {
    color: #000;
}

.modal {
    background: rgba(0, 0, 0, 0.4);
    display: none;
    height: 100%;
    left: 0;
    overflow: hidden;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1;
}

.modal.open {
     align-items: center;
     display: flex;
     justify-content: center;
 }

.modal .wrapper {
    background: #ffffff;
    border-radius: 10px;
    width: 60%;
    padding: 30px;
    position: relative;
}

.content {
    display: block;
}