html, body {
    margin: 0;
    text-align: center;
    color: white;
    height: 100%;
    width: 100%;
    background-color: #009fe3;
    background: radial-gradient(ellipse at center, #009fe3 0%,#008ca5 100%);
    background-repeat: no-repeat;
}

img {
    margin-top: 100px;
    margin-bottom: 50px;
    width: 100%;
    max-width: 700px;
}

a {
    color: white;
    padding: 0px 10px 0px 10px;
    background-color: #008ca5;
    border-radius: 5px;
}

a:hover {
    text-decoration: none;
    color: white;
    background-color: #009fe3;
}
        
h1 {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 100pt;
    text-transform: uppercase;
    line-height: 100%;
}

h2 {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 60pt;
    text-transform: uppercase;
    margin-top: 80px;
}

h3 {
    font-size: 30pt;
    margin-top: 20px;
}

@media screen and (max-width: 768px) {
    h1 {
        font-size: 60px;
    }

    h2 {
        font-size: 40px;
    }

    h3 {
        font-size: 30px;
    }

    img {
        margin-top: 50px;
    }
}