.element {
    background: 0 0;
    border: 1px solid #ffffff80;
    border-radius: 7px;
    width: 100%;
    height: 100%;
    -webkit-mask-image: linear-gradient(#000 1px, #0000);
    mask-image: linear-gradient(#000 1px, #0000)
}

.element-dark {
    background: 0 0;
    border: 1px solid #0000001a;
    border-radius: 8px;
    width: 100%;
    height: 100%;
    -webkit-mask-image: linear-gradient(#000 1px, #000c);
    mask-image: linear-gradient(#000 1px, #000c)
}