whats wrong with my coding??????

/**********************
GENERAL
***********************/

body {
font-family: 'Delius', sans-serif;
}

#wrapper {
max-width: 940px; 
  margin: 0 auto;  
  padding: 0 5%; 
} 

a {
text-decoration: none; 
} 

img {
max-width: 100%; 
}



/**********************
HEADING
***********************/

header{
float: left;
  margin: 0 0 30px 0;
  padding: 5px 0 0 0; 
  width: 100%;
}

#logo { 
text-align: center; 
  margin: 0; 
} 

h1 { 
 font-family: 'Handlee', sans-serif;
  margin: 15px 0; 
  font-size: 1.75em;
  font-weight: normal; 
  line-height: 0.8em;
}

h2 {
font-size: 0.75em;
  margin: -5px 0 0;
  font-weight: normal; 
}



/**********************
Navigation
***********************/

nav {
text-align: center; 
  padding: 10px 0;
  margin: 20px 0 0;
}

nav ul {
list-style: mome;
  margin: 0 10px;
  padding: 0;
}

nav li {
display: inline-block; 
}

nav a {
font-weight: 800;
  padding: 15px 10px;
}



/**********************
Footer
***********************/

footer {
font-size: 0.75em;
  text-align: center;
  clear: both;
  padding-top: 50px;
  color: #ccc;
}

.socila-icon {
width: 20px;
  height: 20px;
    margin: 0 5px;
}



/**********************
Page Portfolio
***********************/

#gallery {
margin: 0;
padding: 0; 
list-style: none;  
}

#gallery li {
  float: left;
  width: 45%;
  margin: 2.5%; 
  background-color: #f5f5f5;
  color: #bdc3c7;
}

#gallery li a p {
margin: 0;
  padding: 5%;
  font-size: 0.75em;
  color: #bdc3c7 
}



/**********************
Page: About
***********************/

.profile-photo {
  clear: both;
  display: block;
  max-width: 150px;
  margin: 0 auto 30px;
  border-radius: 100%;
}





/**********************
Page: contact
***********************/

.contact-info {
list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.9em;
}

.contact-info a {
display: block;
min-height: 20px;
background-repeat: no-repeat;
background-size; 20px 20px
padding: 0 0 0 30px;
  margin: 0 0 10px
}

.contact-info li.phone a {
background-image: url('../img/phone.png');
}

.contact-info li.mail a {
background-image: url('../img/mail.png');
}

.contact-info li.twitter a {
background-image: url('../img/twitter.png');
}

/**********************
COLORS
***********************/

/* site body */
body {
background-color: #fff; 
  color: #999;
}

/* green header */
header {
background: #6ab47b; 
border-color: #599a68; 
}

/*  nav background on mobile devices */
nav {
background: #599a68; 
}

/*  logo text */
h1, h2 {
color: #fff; 
}

/* links */
a {
color: #6ab47b;
}

/* nav link */
nav a, nav a:visited {
color: #fff; 
}

/* selected nav link */
nav a.selected, nav a:hover {
color: #32673f;
}