input:required{
    background-color:#f00;
}

input:required label{
   color: #FF3434;
}

I have the above CSS code currently for my form,

I want to be able to make the label red when the field is required. My input field is:

<label for="frmComTelephone">Telephone</label>  
<input type="number" name="Telephone" id="frmComTelephone"/>

But that CSS isn't working how do I solve this?

2ND problem is I have the following CSS:

input:focus 
{ 
    background-color:yellow;
}

input[type="text"], input[type="date"],input[type="time"],input[type="number"],textarea,select
{
border-radius:5px;
border-width: 1px;
border-style: solid;
border-color: #C6C6C6; 
height:41px;
background-color: #FF3434;
width: 100%;

}

But when the item is focused it doesn't change to yellow, if i remove "background-color: #FF3434;" it turns yellow on focus?

Is what I am doing not able to be done? Or am I going about this wrong?

Thanks