body {
    background-color: aquamarine;
    border : 2px solid gray;
    border-radius: 16px;
    font-family: sans-serif;
    margin-left: auto;
    margin-right: auto;
    max-width: 1024px;
    min-width: 256px;
    padding-top: 8px;
    padding-bottom: 24px;
    padding-left: 24px;
    padding-right: 24px;
}
html {
background: radial-gradient(circle,skyblue,rgb(62, 212, 16)50%);
background-size: 16px 16px;

}