Is this a CSS bug? Left border not showing up - html

Question

I have the following problem: when I first select one of the two boxes the left border is missing (Google Chrome 36); after I select the other one the left border appears.
JSFIDDLE:
http://jsfiddle.net/emrfcuu7/
Observe that immediately after compiling the code - when selecting one of the two boxes the left border is missing; is this a bug or am I doing something wrong?
#import url(http://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,700italic,800italic,300,400,600,700,800);
.main {
position: relative;
background-color: #16A085;
width: 550px;
height: 350px;
}
.mainRibbon {
position: relative;
background-color: #ECF0F1;
width: 70%;
height: 60%;
margin: 0 auto;
top: 50%;
-webkit-transform: translateY(-50%);
-ms-transform: translateY(-50%);
transform: translateY(-50%);
border-radius: 6px;
}
.textBoxStyle {
position: relative;
border: 1px solid rgba(26, 188, 156, 0);
border-radius: 4px;
width: 80%;
text-indent: 20px;
box-shadow: none;
-webkit-box-shadow: none;
line-height: 1.4285;
-webkit-transition: border-color .25s linear;
transition: border-color .25s linear;
margin: 6% 10% 0 10%;
padding-top: 6px;
padding-bottom: 6px;
}
.textBoxStyle:focus {
outline: 0;
border-color: rgba(26, 188, 156, 1);
}
.btnLogin {
background-color: #16A085;
width: 80%;
border-radius: 6px;
margin: 6% 10% 0 10%;
-webkit-transition: background .25s linear;
transition: background .25s linear;
}
.btnLogin:hover {
background-color: #1ABC9C;
cursor: pointer;
cursor: hand;
}
.btnLogin>p {
color: white;
margin: 0;
padding-top: 1%;
padding-bottom: 1%;
font-family: 'Open Sans';
-webkit-font-smoothing: subpixel-antialiased;
font-size: 17px;
text-align: center;
}
.icon {
position: absolute;
background: rgba(0, 0, 0, 0);
width: auto;
height: auto;
top: 50%;
-webkit-transform: translateY(-50%);
-ms-transform: translateY(-50%);
transform: translateY(-50%);
}
.icon>p {
color: white;
font-size: 60px;
line-height: 60px;
padding: 0;
margin: 0;
}
/*de sters
.test{
position:relative;
background-color:blue;
width:80%;
height:30%;
top:50%;
-webkit-transform: translateY(-50%);
-ms-transform: translateY(-50%);
transform: translateY(-50%);
}*/
<div class="main">
<div class="icon">
<p class="text icon"></p>
</div>
<div class="mainRibbon">
<input type="text" class="textBoxStyle" placeholder="Enter your username">
<input type="text" class="textBoxStyle" placeholder="Password">
<div class="btnLogin">
<p>Log in</p>
</div>
</div>
</div>

Answer 1

Problem solved: the issue is that "left-margin" is falling on half-pixel and thus cannot be displayed; I changed "width" from ".main" from "550px" to "560px" and now the left margin displays perfectly;
Thanks to all that suggested to style "outline" to fit my style; it is a good solution only that outline can not have rounded corners as I desire.

Answer 2

I don't know exactly why it is doing that but when you add padding-left:1px to .textBoxStyle, it fixes the problem but not at all times, very wierd.
http://jsfiddle.net/emrfcuu7/3/
ALso I saw that the problem may come from margin:6% 10% 0% 10%;, maybe there is not enough space for the border with these margins and you should use pixels margins
Update
The real solution:
You must remove outline:0 from .textBoxStyle:focus and have this :
.textBoxStyle:focus{
border-color:rgba(26,188,156,1);
}
http://jsfiddle.net/emrfcuu7/7/

Answer 3

give border more than 1px
.textBoxStyle{
position:relative;
border:2px solid rgba(26,188,156,0);
border-radius:4px;
width:80%;
text-indent:20px;
box-shadow:none;
-webkit-box-shadow:none;
line-height:1.4285;
-webkit-transition: border-color .25s linear;
transition: border-color .25s linear;
margin:6% 10% 0 10%;
padding-top:6px;
padding-bottom:6px;
}
the issue is not reproducible if margins are removed.
margin:6% 10% 0 10%;

Answer 4

Make use of this fiddle
.textBoxStyle:focus{
outline:none;
border:2px solid rgba(26,188,156,1);
}