border radius dissapears after a second

Question

I'm working on a website currently and I try to make the profile picture have a border-radius so it is round. This works in first instance, but after 1 second it pops back to a square.

The profile picture also flips around when hovered.

Any solutions?

.border
{
	-moz-border-radius: 100px;
    -webkit-border-radius: 100px;
    border-radius: 100px;
}

.roundedImage {
	overflow:hidden;
	position:relative;
	-moz-border-radius: 100px;
    -webkit-border-radius: 100px;
    border-radius: 100px;
	width: 200px;
	height:200px;
	margin-left: auto;
	margin-right: auto;
    -webkit-animation:pop-in 0.8s;
    -moz-animation:pop-in 0.8s;
    -ms-animation:pop-in 0.8s;

}

.flip-container {
	perspective: 1000;
	z-index:3;
}
	
	.flip-container:hover .flipper, .flip-container.hover .flipper {
		transform: rotateY(180deg);
	}

.flip-container, .front, .back {
	width: 200px;
	height: 200px;
	margin-left:auto;
	margin-right:auto;
	
}


.flipper {
	transition: 0.6s;
	transform-style: preserve-3d;
	
}


.front, .back {
	backface-visibility: hidden;
	position: absolute;
	top: 0;
	left: 0;
}


.front {
	transform: rotateY(0deg);
}


.back {
	transform: rotateY(180deg);
	}

<div class="border">

<div class="flip-container" ontouchstart="this.classList.toggle('hover');">

<div class="roundedImage">

<div class="flipper">

<div class="front">
<div style="background: url(Images/L2351108.jpg); height:200px; background-size: cover;"></div>
</div>

<div class="back">
<div style="background:url(Images/L2351070.jpg); height:200px; background-size:cover;"</div>
</div>

</div>
</div>
</div>
</div>

Answer 1

Remove the border attributes everywhere in you postet css (you don't need them) and add

.front div, .back div {
    -moz-border-radius: 100px;
    -webkit-border-radius: 100px;
    border-radius: 100px;
}

to your css. That works for me.

JSFiddle