9/18. Проверьте правильность кода.

html,
body {
margin: 0;
padding: 0;
}
body {
width: 280px;
min-height: 280px;
padding-top: 10px;
padding-left: 20px;
font-size: 14px;
font-family: “Arial”, sans-serif;
line-height: 1.2;
background: #ecf0f1;
}
.card {
color:white;
background-color: #1abc9c;
width: 240px;
height: 235px;
}
.card > p {
padding-top: 20px;
font-size: 20px;
padding-left: 20px;
}
.card .text_card{
padding-left: 20px;
padding-right: 20px;
}
.card .social {
display: inline-block;
width: 30px;
height: 30px;
vertical-align: middle;
margin-right: 5px;
margin-top: 11px;
background-image: url(/assets/course14/social-challenge.png);
background-color: #16a085;
}
.card .share .social_fb{
margin-left: 20px;
background-position: 0 0;
}
.card .share .social_tw{background-position: -30px 0px;}
.card .social_gp{background-position: -60px 0px;}