.mc-title-box {
    text-align: center;
    font-size: calc(min(8vw, 8vh));
    position: absolute;
    z-index: 105;
    width: min(60vw, 60vh);
    top: min(5vw, 5vh);
    left: calc((100vw - min(60vw, 60vh)) / 2);
    overflow: hidden;
}

.mc-title-box::after {
    content: "";
    position: absolute;
    z-index: 106;
    width: min(60vw, 60vh);
    height: calc(min(8vw, 8vh) / 10);
    top: calc(min(8vw, 8vh) - min(0.7vw, 0.7vh));
    left: 0;
    background-color: white;
    animation: title-line-frame 5s ease-in-out infinite 0s alternate both;
    -webkit-animation: title-line-frame 5s ease-in-out infinite 0s alternate both;
    border-style: solid;
}

@keyframes title-line-frame {
    0% {
        width: 0;
        transform: translateX(0);
        -webkit-transform: translateX(0);
        -moz-transform: translateX(0);
        -ms-transform: translateX(0);
        -o-transform: translateX(0);
        border-width: 0 min(0.5vw, 0.5vh) 0 0;
        border-color: transparent #DC31C0 transparent transparent;
    }

    10% {
        width: min(60vw, 60vh);
        top: calc(min(8vw, 8vh) - min(0.7vw, 0.7vh));
        left: 0;
        border-width: 0;
        border-color: transparent;
    }

    90% {
        width: min(60vw, 60vh);
        top: calc(min(8vw, 8vh) - min(0.7vw, 0.7vh));
        left: 0;
        transform: translateX(0);
        -webkit-transform: translateX(0);
        -moz-transform: translateX(0);
        -ms-transform: translateX(0);
        -o-transform: translateX(0);
    }

    100% {
        width: 0;
        transform: translateX(min(60vw, 60vh));
        -webkit-transform: translateX(min(60vw, 60vh));
        -moz-transform: translateX(min(60vw, 60vh));
        -ms-transform: translateX(min(60vw, 60vh));
        -o-transform: translateX(min(60vw, 60vh));
        border-width: 0 min(0.5vw, 0.5vh) 0 0;
        border-color: transparent transparent transparent #DC31C0;
    }
}