@charset "UTF-8";
.bottom-border-animation{
    overflow: hidden;
}.bottom-border-animation::before{
    content: "";
    position: absolute;
    background-color: gray;
    height: 0.05em;
    bottom: 0.5em;
    left: 0;
    width: 0;
    opacity: 0;
    animation: growAndFakeShrink 2s linear infinite;
    transform: translateX(0%);
}

@keyframes growAndFakeShrink {
    0% {
        width: 0;
        left: 10%;
        opacity: 0;
    }
    50% {
        width: 70%;
        left: 15%;
        opacity: 1;
    }

    100% {
        width: 0;
        left: 80%;
        opacity: 0;
    }
}