Накрутил може лишку но 100%

.curs{
display:inline-block;
width:240px;
height:235px;
background:#1abc9c;
}

.text{
display:inline-block;
width:200px;
margin-left:20px;

color:white;
}
.social{
display:block;
margin-top:25px;
margin-left:15px;
}
.social-fb{
display: inline-block;
width:30px;
height:30px;
margin-left:5px;
background: #16a085 url(‘social-challenge.png’) no-repeat ;}

.social-tw{
display: inline-block;
width:30px;
height:30px;
margin-left:5px;

background: #16a085 url(‘social-challenge.png’) no-repeat -30px;}

.social-gl{
display: inline-block;

width:30px;
height:30px;
margin-left:5px;

background: #16a085 url(‘social-challenge.png’) no-repeat -60px;}