.form-radio
{
     -webkit-appearance: none;
     -moz-appearance: none;
     appearance: none;
     display: inline-block;
     position: relative;
     background-color: #696969;
     color: #f7f7f7;
     top: 4px;
     height: 20px;
     width: 20px;
     border: 0;
     border-radius: 35px;
     cursor: pointer;     
     margin-right: 5px;
     outline: none;
}
.form-radio:checked::before
{
     position: absolute;
     font: 13px/1 'Open Sans', sans-serif;
     left: 6px;
     top: 3px;
     content: '\02143';
     transform: rotate(40deg);
}
.form-radio:hover
{
     background-color: black;
}
.form-radio:checked
{
     background-color: #696969;
}
label
{
     font: 15px/1.7 'Open Sans', sans-serif;
     color: #333;
     -webkit-font-smoothing: antialiased;
     -moz-osx-font-smoothing: grayscale;
     cursor: pointer;
}