Hi, I have problem with my image-background. When I hold ctrl and scroll down I can see multiple of my body image-background? Any ideas? Sorry for my stupid questions but I am learning. 
HTML:
Welcome to my portfolio- Who am I?
- What I can offer?
- My Curriculum vitae
- Contact me
Who am I?
Hi! Welcome to my portfolio. My name is Simon. I finished Maria Curie-Sklodowska University in Lublin. In Poland well known as UMCS :). I graduated Management with Brand Image Strategic Management. Then I tried my hand at the army. It was fantastic experience. After that, meanwhile I worked in a few jobs as recruiter or customer service specialist. Unfortunately, I was not happy working there and I desired to change my life and do something new. Something what makes my life more valuable. I decided to be front-end developer.
CSS:
body
{background-image:url(http://www.wallpapers4u.org/wp-content/forum/uploads/room_office_desk_chair_shelves_39161_1920x1080.jpg);
font-family: ‘Josefin Sans’, sans-serif;
margin:0;
}
header
{font-size:60px;
text-align:center;
font-weight:700;
color:#555;
margin-top:30px;
}
.naw
{height:80px;
width:100%;
background-color:#666567;
opacity:0.8;
text-align:center;
}
ol
{list-style-type:none;
}
ol>li
{display:inline-block;
padding:22px;
font-size:28px;
padding-top:30px;
border-right: 1px solid #dddddd ;
}
ol>li:first-child
{border-left: 1px solid #dddddd ;
}
.img
{
border:ridge 2px #fdfdfd;
width:130px;
height:185px;
dislpay:inline-block;
}
ol>li:hover
{background-color:#555247;
cursor:pointer;
}
#content
{background-image:url(http://www.wallpapers4u.org/wp-content/forum/uploads/table_office_chairs_glass_window_39163_1920x1080.jpg);
width:1920px;
height:1080px;
margin-top:890px;
position:relative;
}
p
{
font-size:24px;
}
#who
{width:800px;
margin-left:auto;
margin-top:auto;
text-align:center;
}
.head
{margin-top:30px;
position:absolute;
text-align:center;
}
Thank you