.t_center {
    text-align: center;
}

.c_center{
    margin: auto;
    width: 65%;
    padding: 10px;
}

header { text-align: center; border-style: none none solid none;}

nav ul {
    list-style-type: none;
    padding: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

nav li { margin-right: 30px; margin-bottom: 5px;}

nav a {
    text-decoration: none;
    color: inherit;
}

/*body { font-family: 'Source Sans Pro Topnav', sans-serif; }*/

footer {
    text-align: center;
    border-style: solid none none none;
    margin-top: 20px;
}

footer > p {
    margin-bottom: -5px;
}

#main_logo {
/*     width: 25%; */
    width: 13em;
    height: auto;
}

#presentation > p {
    text-align: justify;
}

#featuressection > ul {
    padding: 0;
    text-align: justify;
}

#featuressection > ul > li {
    padding-bottom: 10px;
}

#downloadsection {
    text-align: center;
}

#requirementssection > p {
    text-align: justify;
}

.subtitle {
    padding: 10px;
}

.screenshot {
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 5px;
    width: 220px;
    margin-bottom: 10px;
}

.screenshot:hover {
    box-shadow: 0 0 2px 1px rgba(0, 140, 186, 0.5);
    cursor: pointer;
}


.download_option {
    display: inline-block;
    margin-right: 10px;
    margin-bottom: 20px;
}

a {
    color: #ae534f;
    text-decoration: none;
}


a:hover {
    color: #fd504e;
    text-decoration: underline;
}

.alternative_download_link {
    font-size: 0.8em;
}

.package_img {
    width: 75px;
    display: block;
    margin: auto;
    margin-bottom: 10px;
}

.square-screenshot {
    width: 220px;
}

.rectangle-screenshot {
    width: 300px;
}

@media (max-width: 400px) and (orientation: portrait) {
    .rectangle-screenshot { width: 220px; }
}