label > span {
    margin-right: 5px;
}

label > span:empty {
    margin-right: 0;
}

label > span:after {
    content: ":";
}

label > span:empty:after {
    content: "";
}

input {
    padding: 4px;
}

.first-form div {
    margin: 9px;
}

body {
    padding: 30px;
    font-family: sans-serif;
}

table > thead > th {
    padding: 8px;
}

.row > .left {
    width: 40%;
    display: inline-block;
    margin-right: 5px;
    border-right: 1px solid black;
    padding-right: 16px;
}

.row > .right {
    width: 49%;
    display: inline-block;
}