make default option
<select >
<option value="volvo">Volvo</option>
<option value="saab" selected='selected'>Saab</option>
<option value="opel">Opel</option>
<option value="audi">Audi</option>
</select>
image.png
make one option disabled
<select>
<option value="volvo">Volvo</option>
<option value="saab" disabled='disabled'>Saab</option>
<option value="opel">Opel</option>
<option value="audi">Audi</option>
</select>
image.png
contrast in attr
image.png
