$bordrColor:#e4ebf0;

.border-1px:after{
    content: "";
    width: 200%;
    height: 200%;
    position: absolute;
    top: 0;
    left: 0;
    -webkit-transform: scale(0.5);
    -webkit-transform-origin: 0 0;
    padding: 1px;
    box-sizing: border-box;
    pointer-events: none;
}

.border-b:after{
    border-bottom: 1px solid $bordrColor;
}
.border-l:after{
    border-left: 1px solid $bordrColor;
}
.border-t:after{
    border-top: 1px solid $bordrColor;
}
.border-r:after{
    border-right: 1px solid $bordrColor;
}
.border-a:after{
    border: 1px solid $bordrColor;
}
.border-4a:after{
    border: 1px solid $bordrColor;
    border-radius: 4px;
}
.border-8a:after{
    border: 1px solid $bordrColor;
    border-radius: 8px;
}