CSS Forms/Input Maniuplation - html

Question

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"/>
<label for="frmIn1IncinTime">Time</label>
<input type="text" name="Incident Time" id="frmIn1IncinTime" required="required"/><br>
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

Answer 1

Issue 1:
input:required label{
color: #FF3434;
}
This won't work because the label is not a child of the input. They're siblings. To solve that you have to create a class and attach it to your label:
label.required { color: #FF3434; }
<label for="frmComTelephone" class="required">Telephone</label>
Issue 2:
Try this:
input:focus,
textarea:focus,
select:focus
{ background-color: yellow !important; }
...
UPDATE
If you're more comfortable without using !important then try this:
input[type="text"]:focus,
input[type="date"]:focus,
input[type="time"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus
{ background-color: yellow }
OR
if you have an id on your form this will also work
#formID input:focus,
#formID textarea:focus,
#formID select:focus
{ background-color: yellow }

Answer 2

You need to put the input:focus rule behind the input[type="number"] rule or use input[type="number"]:focus.
Otherwise its overwritten by input[type="number"] as it's more specific.

Answer 3

Problem 2:
CSS selectors by attribute, like input[type="number"] and pseudo-elements like :focus have equal specifity. This means that your input:focus rule gets overridden by the following input[type="number"] background.
There are two ways to fix this:
Higher specifity in the first selector:
form input:focus
{
background-color:yellow;
}
input[type="text"]
{
background-color: #FF3434;
}
Better: Correct rule order, more important one comes second
input[type="text"]
{
background-color: #FF3434;
}
form input:focus
{
background-color:yellow;
}
CSS specifity seems hard, but it's worth understanding it properly. There are a lot of resources about it, try this introduction: http://coding.smashingmagazine.com/2007/07/27/css-specificity-things-you-should-know/