.a1-fixed {
    width: 100%;
    height: 300px;
    background: url(../images/a1-fixed.jpg) no-repeat;
    background-attachment: fixed;
    background-position: center center;
    background-size: cover;
}

.article1 {
    padding-top: 0;
    background: url(../images/a1-bg.jpg);
}

.a1-1 {
    width: 100%;
    mix-blend-mode: exclusion;
}

.a1-logo {
    width: 300px;
    margin-top: -25%;
}

.a1-2 {
    margin: 2rem 0 3rem 0;
}

.a1-text {
    font-size: 20px;
    font-weight: 300;
    line-height: 1.8;
    text-align: center;
}

.a1-bottom {
    font-size: 32px;
    font-family: 'PuradakGentleGothicR';
    letter-spacing: -0.06em;
    margin-top: 4rem;
}


/*==================================================*/
@media (max-width: 1650px) {
    .a1-logo {
        margin-top: -20%;
    }
}


@media (max-width: 1250px) {
    .a1-logo {
        margin-top: -15%;
    }
}


@media (max-width: 850px) {
    .a1-text {
        width: 90%;
    }
    
    .a1-text em br {
        display: none;
    }
}


@media (max-width: 768px) {
    .a1-fixed {
        height: 220px;
    }
    
    .a1-logo {
        width: 30%;
    }

    .a1-2 {
        width: 75%;
    }
}


@media (max-width: 550px) {
    .a1-2 {
        margin: 2rem 0;
    }
    
    .a1-text {
        font-size: 15px;
        line-height: 1.65;
    }

    .a1-bottom {
        font-size: 20px;
        margin-top: 3rem;
    }
}


@media (max-width: 450px) {
    .a1-fixed {
        height: 180px;
    }
}