body {
    color: #333;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    background-image: url(background.png);
}

a {
    text-decoration: none;
}

.heading-img {
	display: block;
	width: 80%;
	max-width: 500px;
	margin: auto;
}

.nav-container {
    clear: both;
}

.nav {
    margin-top: 1rem;
    background-color: #747474;
    border: none;
    color: #fff;
    padding: 10px 16px;
    text-decoration: none;
    display: inline-block;
}

.nav:hover {
    opacity: 0.75;
}

.float-left {
    float: left;
}

.float-right {
    float: right;
}

.center {
    text-align: center;
}

.footer {
    margin-top: 10rem;
}

.footer > p > a, .footer > p > a:visited, .footer > p > a:active {
    color: #747474;
}

.epframe {
    margin: auto;
    max-width: 900px;
    text-align: center;
    padding: 24px;
}

.epsquare {
    width: 23%;
    padding-bottom: 23%;
    position: relative;
    margin: 0.5%;
    display: inline-block;
    background-size: cover;
    opacity: 1;
}

.epsquare:hover {
    opacity: 0.75;
}

.eptextfunc {
    width: 100%;
    font-weight: bold;
    position: absolute;
    color: white;
    bottom: 33%;
    font-size: 1.35rem;
}

.eptextdescription {
    width: 100%;
    position: absolute;
    color: white;
    top: 68%;
}

.epcolwiki {
    background-color: #009da5;
    background-image: url(epwiki.png);
}

.epcolprojekte {
    background-color: #97a141;
    background-image: url(epprojekte.png);
}

.epcolmail {
    background-color: #0099CC;
    background-image: url(epmail.png);
}

.epcolmaillist {
    background-color: #0aa6df;
    background-image: url(epmaillist.png);
}

.epcolcloud {
    background-color: #3B6CA6;
    background-image: url(epcloud.png);
}

.epcolcalendar {
    background-color: #3B6CA6;
    background-image: url(epcalendar.png);
}

.epcolcontacts {
    background-color: #3B6CA6;
    background-image: url(epcontacts.png);
}

.epcolpolls {
    background-color: #3B6CA6;
    background-image: url(eppolls.png);
}

.epcoldeck {
    background-color: #3B6CA6;
    background-image: url(epdeck.png);
}

.epcolsmartwe {
    background-color: #E05656;
    background-image: url(epsmartwe.png);
}

.epcolcode {
    background-color: #40B075;
    background-image: url(epcode.png);
}

.epcolchat {
    background-color: #F5455C;
    background-image: url(epchat.png);
}

.epcolsurvey {
    background-color: #42ac00;
    background-image: url(epsurvey.png);
}

.epcolmap {
    background-color: #008600;
    background-image: url(epmap.png);
}

.epcolaudittool {
    background-color: #7ca399;
    background-image: url(epaudittool.png);
}

.epcolprevious {
    background-color: #b694ff;
    background-image: url(epprevious.png);
}

@media only screen and (max-width: 900px) {
    .epsquare {
        width: 30%;
        padding-bottom: 30%;
    }
}
@media only screen and (max-width: 640px) {
	.epframe {
		padding: 24px 0px 24px 0px;
	}
	.epsquare {
		width: 40%;
		padding-bottom: 40%;
	}
}

@media only screen and (max-width: 450px) {
	.epsquare {
		width: 46%;
		padding-bottom: 50%;
		margin: 1.5%;
	}
}

@media only screen and (max-width: 350px) {
	.epsquare {
		width: 49%;
		margin: 0;
	}
}