When the transform property is added to div.tp-banner, the border of div.tp-border-bottom disappears. However, setting the height of div.tp-border-bottom:after to 2px makes it visible. This issue is observed on the Android WebView platform.
.tp-banner {
width: 100px;
height: 60px;
-webkit-transform: translate(0px, 0px) translateZ(0px);
transform: translate(0px, 0px) translateZ(0px);
}
.tp-border-bottom {
position: relative;
width: 100px;
height: 60px;
}
.tp-border-bottom:after {
content: "";
position: absolute;
font-size: 0;
line-height: 0;
background-color: #e1e1e1;
-webkit-transform-origin: 0 0;
-ms-transform-origin: 0 0;
transform-origin: 0 0;
bottom: 0;
left: 0;
width: 100%;
height: 1px;
-webkit-transform-origin: 0 1px;
-ms-transform-origin: 0 1px;
transform-origin: 0 1px;
}
.tp-border-scale:after {
-webkit-transform: scaleY(0.3333);
-ms-transform: scaleY(0.3333);
transform: scaleY(0.3333);
}
/*@media only screen and (-webkit-min-device-pixel-ratio: 3) {
.tp-border-bottom:after {
-webkit-transform: scaleY(0.3333);
-ms-transform: scaleY(0.3333);
transform: scaleY(0.3333);
}
}*/<div class="tp-banner"></div>
<div class="tp-border-bottom tp-border-scale"></div>