.spring
{
    animation: spring 1s forwards ease-in-out;
}
@keyframes spring {
    from
    {
        clip-path: polygon(0 0, 100% 0, 100% 0%, 0 0%);
    }
    to
    {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }
}
.fill .filled
{
    animation: filling 3s forwards ease-in-out;
}
@keyframes filling {
    from
    {
        width: 0;
    }
    to
    {
        width: 75%;
    }
    
}