.w-100v{
    width: 100vw;
}
.w-full{
    width: 100%;
}

.h-100v{
    height: 100vh;
}
.h-full{
    height: 100%;
}

.row{
    display: flex;
    align-items: center;
}

.bg-ping{
    background-color: pink;
}
.pos-r{
    position: relative;
}
.pos-a{
    position: absolute;
}