style.css

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

body {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    text-align: center;
}

a {text-decoration: none;}

h1 {
    color: red;
    text-shadow: 2px 2px black;
    font-size: 36px;
}

p {color: #666; font-size: 18px;}

h1, p {
    margin: 15px;
}

#chart {
    width: 560px;
    height: 560px;
    margin: 50px auto;
}

#button {
    display: inline-block;
    background-color: #00fcfd;
    text-shadow: 1px 1px 8px #2237ad;
    font-weight: bolder;
    color: #000;
    padding: 20px;
    width: 90px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

#result {
    font-size: 24px;
    font-weight: bold;
    margin-top: 20px;
}



footer {
    margin-top: 10vh;
    position: relative;
    bottom: 0;
    width: 100%;
    font-size: small;
    font-weight: bolder;
    background-color: #0169C7;
    border-top: 2px solid rgba(0, 0, 0, 0.829);
    text-shadow: 1px 0px #0169C7;;
}