body {
background-color: cyan;
border: 2px solid gray;
border-radius: 16px;
font-family: tahoma;
margin-left: auto;
margin-right: auto;
max-width: 1024;
min-width: 256;
padding-top: 8px;
padding-bottom: 24px;
padding-left: 24px;
padding-right: 24px;
}
html {
background: radial-gradient(circle, skyblue, skyBlue 50%, plum 50%, skyBlue);
background-size: 8px 8px;
}
a
{
    text-decoration: none;
}
p.button {
    border: 4px solid #0000FF;
    border-radius: 10px;
    padding: 1em;
    background-color: #B2FFFF;
    text-decoration: none;
    text-align: center;
}