.spacer {
    width: 100%;
    height: 86px;
}

.introduction {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: calc(100% - 40px);
    height: 500px;
    background-color: var(--white);
    margin: 0 auto 100px auto;
    border-radius: 10px;
    box-sizing: border-box;
    overflow: hidden;
}

.introduction img {
    position: absolute;
    width: 100%;
    object-fit: cover;
    object-position: 50% 50%;
    height: 500px;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 500px;
    background-color: rgba(0, 0, 0, 0.4);
}

.introduction_content {
    position: absolute;
    top: 0;
    left: 0;
    height: 500px;
    color: var(--white);
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-sizing: border-box;
    padding: 0 100px;
    width: 50%;
}

.introduction_content p {
    text-shadow: 2px 2px 10px #242424;
}

.introduction h1 {
    margin-top: -10px;
    margin-bottom: 0;
}

.introduction .button {
    margin-top: 15px;
}

#page_jump {
    position: absolute;
    margin-top: -166px;
}

@media (max-width: 1250px) {
    .introduction_content {
        width: 65%;
    }
}

@media (max-width: 900px) {
    .introduction_content {
        width: 100%;
        padding: 0 50px;
    }
}

@media (max-width: 600px) {
    .introduction,   
    .introduction_content {
        height: 100%;
    }

    .introduction {
        margin: 0 auto 60px auto;
    }

    .overlay,
    .introduction img {
        height: 100%;
    }

    .introduction_content {
        position: relative;
        align-items: center;
        text-align: center;
        padding: 100px 20px;
    }

    #page_jump {
        margin-top: -126px;
    }
}