Стилизация radio button

input[type="radio"]{display: none;} 
 
label{ width: 30px; height: 30px; display: inline-block; } 
 
label.bla1{background: url("http://bbcsproducts.com/carsharing//public_html/uploads/preferences/1453751767_90404.jpg") center no-repeat; width: 50px; height: 50px; } 
 
input[type="radio"]:checked+label{ 
    border: black solid 1px; 
}

<input type="radio" name="bla1" value="bla1" id="bla1"/> 
<label for="bla1" class="bla1"></label>