Input:focus not working - html

Question

At first my input focus was working just fine, now all of a sudden when I add a couple of more styles to my input, it suddenly stops working. I've only added the 'input[type="text"] and border-radius and padding and some margins since when it was working. When you click each form element, nothing happens even though I have a rule for focus(which you can find near the bottom of the code). Is there any workaround for this?
form{
position: absolute;
left: 50%;
color: white;
margin-left: -180px;
padding: 15px 30px 15px 30px;
background-color: #26004d;
border-radius: 7px;
margin-top: 10px;
width: 300px;
}
label{
float: left;
text-align: right;
margin-right: 15px;
width: 100px;
}
input:focus {
border: 2px solid #862d59;
}
input[type="submit"]{
width: 50%;
background-color: #862d59;
color: white;
margin-top: 5px;
padding: 12px 12px;
border: none;
cursor: pointer;
}
input[type="text"]{
width: 100%;
padding: 12px 12px;
margin: 4px 0;
border: 1px solid #ccc;
border-radius: 6px;
//box-sizing: border-box;
}
<div id="formholder1">
<form>
<div class="single-field">
<label for="Username">Username:</label>
<input name="Name" type="text"></input>
</div>
<div class="single-field">
<label for="Password">Password:</label>
<input name="Password" type="text"></input>
</div>
<input type="submit" value="Login">
</form>
</div>

Answer 1

Use this input[type="text"]:focus {
border: 2px solid #862d59;
}
learn it - http://www.w3schools.com/cssref/trysel.asp?selector=:focus
example - https://css-tricks.com/snippets/css/glowing-blue-input-highlights/
now its working
form{
position: absolute;
left: 50%;
color: white;
margin-left: -180px;
padding: 15px 30px 15px 30px;
background-color: #26004d;
border-radius: 7px;
margin-top: 10px;
width: 300px;
}
label{
float: left;
text-align: right;
margin-right: 15px;
width: 100px;
}
input[type="text"]:focus {
border: 2px solid #862d59;
}
input:focus {
border: 2px solid red;
}
input[type="submit"]{
width: 50%;
background-color: #862d59;
color: white;
margin-top: 5px;
padding: 12px 12px;
border: none;
margin-left:-10px;
cursor: pointer;
}
input[type="text"]{
width: 100%;
padding: 12px 12px;
margin: 4px 0;
border: 1px solid #ccc;
border-radius: 6px;
margin-left:-15px;
//box-sizing: border-box;
}
<div id="formholder1">
<form>
<div class="single-field">
<label for="Username">Username:</label>
<input name="Name" type="text"></input>
</div>
<div class="single-field">
<label for="Password">Password:</label>
<input name="Password" type="text"></input>
</div>
<input type="submit" value="Login">
</form>
</div>

Answer 2

Put Your :focus property after input.
input[type="text"]:focus {
border: 5px solid #862d59;
}
form{
position: absolute;
left: 50%;
color: white;
margin-left: -180px;
padding: 15px 30px 15px 30px;
background-color: #26004d;
border-radius: 7px;
margin-top: 10px;
width: 300px;
}
label{
float: left;
text-align: right;
margin-right: 15px;
width: 100px;
}
input[type="submit"]{
width: 50%;
background-color: #862d59;
color: white;
margin-top: 5px;
padding: 12px 12px;
border: none;
cursor: pointer;
}
input[type="text"]{
width: 100%;
padding: 12px 12px;
margin: 4px 0;
border: 1px solid #ccc;
border-radius: 6px;
box-sizing: border-box;
}
input[type="text"]:focus {
border: 5px solid #862d59;
}
<div id="formholder1">
<form>
<div class="single-field">
<label for="Username">Username:</label>
<input name="Name" type="text"></input>
</div>
<div class="single-field">
<label for="Password">Password:</label>
<input name="Password" type="text"></input>
</div>
<input type="submit" value="Login">
</form>
</div>