a:link {
    text-decoration: none;
    color: #15A;
}

a:visited {
    color: #180;
}

a:hover {
    text-decoration: underline;
    color: orange;
}

body {
    font-size: 1rem;
    font-family: helvetica, verdana, sans-serif;
    text-align: left;
    text-align: center;
    background-color: #EEE;
    color: #000;
}

html, body {
    height: 100%;
}

.full-height {
    height: 100%;
}

.item-box {
    position: relative;
    display: inline-block;
    text-align: justify;
    vertical-align: text-top;
    margin-bottom: 5px;
    padding: 5px;
    max-width: 640px;
    vertical-align: middle;
    background: #EEE;
}

.f2 {
    font-size: 1.2rem;
}

.f3 {
    font-size: 1.3rem;
}

.f4 {
    font-size: 1.4rem;
}

.f5 {
    font-size: 1.5rem;
}

.f6 {
    font-size: 1.6rem;
}

.f7 {
    font-size: 1.8rem;
}