.article4 {
    padding: 0;
    background: url(../images/a4-bg.jpg);
}

.article4 .article-wrapper {
    padding: 120px 0;
}

.a4-flow-wrapper {
    width: 100%;
    border-top: 1px solid var(--main-color);
    border-bottom: 1px solid var(--main-color);
    background-color: #fff;
    overflow: hidden;
}

.a4-flow {
    color: var(--main-color);
    padding: 30px 0;
    padding-top: 35px;
    font-size: 32px;
    font-weight: 500;
    font-family: 'twaysky';
    letter-spacing: 0;
    display: flex;
    white-space: nowrap;
    letter-spacing: 0;
    animation: slide 30s linear infinite;
}

@keyframes slide {
    0% {
        transform: translate3d(0, 0, 0);
    }

    100% {
        transform: translate3d(-150%, 0, 0);
    }
}


.a4-title {
    margin-bottom: 3rem;
}

.a4-box-wrapper {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 5rem;
}

.a4-overlay {
    position: absolute;
    top: 12%;
    display: flex;
    align-items: center;
}

.a4-1,
.a4-2 {
    z-index: 1;
}

.a4-3,
.a4-4 {
    width: 50%;
    z-index: 10;
}


/*==================================================*/
@media (max-width: 1250px) {
    .a4-box-wrapper {
        padding: 0 40px;
        gap: 5%;
    }
}


@media (max-width: 850px) {
    .article4 .article-wrapper {
        padding: 60px 0;
    }

    .a4-flow {
        padding: 22px 0;
        padding-top: 26px;
        font-size: 24px;
    }

    @keyframes slide {
        0% {
            transform: translate3d(0, 0, 0);
        }
    
        100% {
            transform: translate3d(-200%, 0, 0);
        }
    }
    
    .a4-title {
        width: 75%;
    }
}


@media (max-width: 450px) {
    .a4-title {
        margin-bottom: 2rem;
    }
    
    .a4-box-wrapper {
        padding: 0 20px;
    }
}