*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}
body{
    height: 100vh;
}
table,td,th{
    border:1px solid black;

}
table{
    width:90%;
    margin: 0 auto;

}
h1{
    text-align: center;

}
.nounderline{
    text-decoration: none;
}
.szary{
    color:grey;
}
th{
    background-color: chartreuse;
}
td{
    background-color: coral;
}
td:nth-child(2n){
    background-color: yellow;

}