body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
}
table {
    border-collapse: collapse;
    border: 2px solid #00bfff;
    margin: 20px auto;
    padding: 10px;
    background-color: #ffffff;
}
header {
    background-color: lightgreen;
    padding: 20px;
    text-align: center;
    font-size: 24px;
    font-variant: small-caps;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    background-color: aquamarine;
    display: flex;
    justify-content: center;
}
nav ul li {
    margin: 0 10px;
}
nav ul li a {
    display: block;
    color: blue;
    text-align: center;
    padding: 10px 15px;
    font-variant: small-caps;
    text-decoration: none;
    font-weight: bold;
}
nav ul li a:hover {
    background: #00ccff;
    color: black;
    border-radius: 6px;
}
td {
    border: 1px solid #00bfff;
    padding: 10px;
    vertical-align: top;
}

img {
    width: 150px;
    height: 150px;
    display: block;
    margin: 10px 0;
    border: 1px solid #ccc;
}

p {
    margin: 5px 0;
}

select, input[type="number"], input[type="button"] {
    padding: 5px;
    margin-top: 5px;
}

#summaSelect, #summaRadio, #kalkVastus {
    font-weight: bold;
    font-size: 1.2em;
}