mainStyle.css

table.mytable, table.mytable tr td{
   border: 1px solid black;
}
table.mytable tr td{
    padding: 4px;
}

table.mytable{
    border-collapse:separate;
    border-radius: 15px;
}
table.mytable tr:first-child td:first-child{
    border-collapse:separate;
    border-top-left-radius: 15px;
}
table.mytable tr:first-child td:last-child{
    border-collapse:separate;
    border-top-right-radius: 15px;
}
table.mytable tr:last-child td:first-child{
    border-collapse:separate;
    border-bottom-left-radius: 15px;
}
table.mytable tr:last-child td:last-child{
    border-collapse:separate;
    border-bottom-right-radius: 15px;
}

table.mytable tr:nth-child(even){
    background-color : rgba(155,155,155,0.5);
}


table, td input{
    width: 100%;
}

h1{
    text-align: center;
}

em{
    font-weight: bold;
}

#gameLogo{
    display: block;
    margin-left: auto;
    margin-right: auto;
    max-width: 75%;
}