.mycheckbox input[type="checkbox"] {
    margin-right: 5px;  
    font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size:small;    
}
.myradiobox input[type="radio"] {
    margin-right: 5px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: small;
}