.container {
    width: 600px;
    margin: 20px auto;
}
nav {
    border-bottom: 1px gray solid;
    display: flex;
    justify-content: space-evenly
}

section {
    margin-bottom: 20px;
}
section h3 {
    border-bottom: 1px black solid;
    position: relative;
}
section span {
    font-size: 10px;
    position: absolute;
    right: 0;
    bottom: 2px;
}
section hr {
    margin: 0 40px 10px;
}
section p:not(:last-child) {
    margin-bottom: 10px;
}