body {
    font-family: var(--tf);
}

#content {
    left: 20px;
    right: 0;
    padding-right: 20px;
    font-size: 1.1em;
    line-height: 1.5em
}
#content label {
    display: block;
    width: 100%;
    margin: 5px 0;
    overflow: hidden
}
#content>div {
    width: 450px;
    margin: auto
}
h1 {
    font-size: 1.2em
}
input,
select {
    width: 150px;
    float: right
}
input[type=checkbox] {
    width: auto;
    margin-left: 160px
}
.err {
    color: #f00
}
#back-div {
    margin-top: 1em
}