* { 
    margin-top: 5px; 
    margin-bottom: 5px; 
}
html { 
    margin: 0px; 
}
body {
    width: 100vw;
    min-height: 100vh;
    margin: 0px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

a { 
    color: inherit; 
    text-decoration: underline dotted; 
}
a:hover { 
    text-decoration: underline; 
    cursor: pointer; 
}
table { 
    margin: 0 auto; 
}
td {
    width: 20px; height: 20px;
    text-align: center; vertical-align: top;
    user-select: none;
    -moz-user-select: none; -khtml-user-select: none;
    -webkit-user-select: none; -o-user-select: none;
    cursor: pointer;
}

@media (max-width: 800px) {
    body { 
        justify-content: start; 
        padding-top: 2rem;
}   
}