body {
    font-family: arial, sans-serif;
}
h1 {
text-align: center;
}
form {
    background-color: rgb(183, 219, 240);
    padding: 15px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}
.pakollinen {
    color: #f00;
} 
.levee {
    font-family: inherit;
    font-size: inherit;
    padding: 0.2em;
    width: 100%;
    box-sizing: border-box;
}
.nappi {
    border: none;
    background-color: #2e456e;
    color: #fff;
    width: 100%;
    padding: 0.5em 1em;
    border: none;
    font-size: 1.2em;
    font-weight: bold;
    letter-spacing: 1px;
    box-shadow: 4px 4px 0px rgba(0, 0, 0, 0.3);
    border-radius: 2px;
}
.nappi:active {
    position: relative;
    top: 2px;
    left: 2px;
    box-shadow: none;
}
.nappi:hover {
    background-color: #1f2f4b;
}
.nappi:first-child {
    margin-bottom: 1em;
}
.nappi:last-child {
    margin-top: 1em;
}
.numero {
    font-size: 2em;
    width: 3em;
    text-align: right;
}

table {
    width: 100%;
}
table input {
    width: 100%;
    margin: 0;
}
.vasen, .keski, .oikea {
    width: 33%;
}
.keski {
    text-align: center;
}
.oikea {
    text-align: right;
}