<form>
    <input type="checkbox" name="meal" value="Chicken" >Chicken
    <input type="checkbox" name="meal" value="Salad" checked>Salad
</form>

fieldset{
    position: relative;
    width: 20vw;
    height 20vh;
}
<form>
    <input type="radio" name="shipment" value="Air" > Air
    <input type="radio" name="shipment" value="Truck" checked> Truck
</form>

<form>
    <fieldset id="personal">
        <legend>Enter name</legend>
        name: <input type="text" name="txtName" >
</form>