body {
    margin: 0 auto;
}
html {
    font-family: Arial;
}
h1 {
    font-weight: 100;
    margin-left: 100px;
    font-size: 14px;
    color: #C1383A;
    margin-bottom: 50px;
}
p {
    margin-left: 60px;
    font-size: 12px;
    width: 580px;
}
li {
    list-style: none;
}
#koord_sys {
    background-image: url(../img/hormones_curves_fr.jpg);
    background-repeat: no-repeat;
    width: 730px;
    height: 340px;
}
img.koord-image {
    left: 35px;
    position: absolute;
    top: 135px;
    display: none;
}
div.info_text p {
    display: none;
}
p#info_text {
    display: block;
}
ul.nav-button {
    display: block;
    margin-bottom: 2em;
    margin-left: 7px;
    margin-top: -28px;
    padding: 0;
}
ul.nav-button li {
    display: inline-block;
    font-size: 16px;
    padding-right: 10px;
    text-align: center;
    width: 105px;
}
ul.nav-button li a {
    text-decoration: none;
    width: inherit;
    display: inline;
    padding-left: 42px;
    padding-right: 44px;
    width: 50px;
}