styles.css

body{
    background-image: url(subway.jpg);
    background-size: cover;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-weight: bold;
    text-align: center;
    height: 100vh;
}

#container{
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        padding: 40px;
        background-color: white;
        border-radius: 10px;
        max-width: 80%;
      }

h1{
    margin-top: 10px;
    margin-bottom: 10px;
}

h2{
    font-size: 50px;
    margin-top: 0;
    margin-bottom: 20px;
}
button{
    border: none;
    padding-top: 10px;
    padding-bottom: 10px;
    color: white;
    font-weight: bold;
    width: 200px;
    margin-bottom: 5px;
    border-radius: 8px;
}

#increment-btn{
    background: black ;
}

#save-btn{
    background: grey ;
}

#save-el{
    font-weight: bold;
}