#course-info-header {
    position: sticky;
    background-color: #46bed6;
    z-index: 2;
    top: 3.5rem;
    width: 100%;
    box-shadow: 0 2px 4px #00000033;

}

#course-info-header > .wide-wrapper {
    height: 2.7rem;
    padding-block: 0.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-inline: auto;
}

#course-info-header a {
    color: black;
}

#course-title {
    display: inline-block;
    flex-grow: 1;
    flex-shrink: 1;
    text-align: center;
    padding-inline: 2rem;
    font-size: 1.1rem;
}

#header-back, #header-fav {
    display: inline-block;
    height: 1.5rem;
}

#header-back svg, #header-fav svg {
    height: 1.5rem;
}

#course-info {
    grid-area: info;
}

#course-image-wrapper {
    grid-area: img;
}
#course-image {
    margin-block: 1rem;
    max-height: 13rem;
    overflow: hidden;
    border-radius: 1rem;
    box-shadow: 0 3px 2px rgba(0 0 0 / 30%);
    margin-inline: auto;
    max-width: 30rem;
    margin-inline: auto;
}

#course-image img {
    background-color: gray;
    width: 100%;
    object-fit: cover;
    object-position: center;
}

.mg-sides {
    margin-inline: 1.5rem;
}

#info-wrapper {
    grid-area: info;
}

#course-info {
    background-color: white;
    border-radius: 1rem;
    padding-block: 1.5rem;
    box-shadow: 0 0 4px 2px rgba(0 0 0 / 10%);
    max-width: 25.5rem;
    margin-inline: auto;
}

#course-info h2 {
    font-weight: bold;
    font-size: 1.3rem;
    margin-bottom: 1em;
}

.spread-list {
    list-style: none;
    padding-inline: 0.5rem;
    margin-bottom: 1rem;
}

.spread-list li{
    display: flex;
    font-size: 1.1rem;
    margin-bottom: 1em;
    justify-content: space-between;
}

#price-info {
    border-radius: 2rem;
    border: 0.1rem solid rgba(0 0 0 / 70%);
    padding: 1.2rem 2em;
    text-align: center;
    vertical-align: middle;
    font-size: 1.3rem;
    line-height: 1.3em;
}

#course-details {
    grid-area: detail;
    margin-inline: auto;
}

#course-details p {
    line-height: 1.3em;
    text-align: justify;
}

#course-details h2 {
    background-color: white;
    color: black;
    text-align: center;
    box-shadow: 0 0 6px 0px rgba(0 0 0 / 20%);
    margin-bottom: 2rem;
}

#course-details h3 {
    font-weight: bold;
    font-size: 1.2em;
    margin-bottom: 0.7em;
}

#course-details section {
    padding-block: 1em;
    border-bottom: 0.1rem solid rgba(0 0 0 / 30%);
    margin-bottom: 1.5em;
}

#course-details section ul {
    margin-left: 1em;
}

#course-details li {
    line-height: 1.2em;
    margin-bottom: 1em;
}

@media screen and (min-width: 50rem) {
    main {
        padding-top: 1rem;
    }

    #course-info-header {
        max-width: 70rem;
        margin-inline: auto;
        border-radius: 0.4rem;
    }

    .wide-wrapper {
        margin-inline: 2rem;
    }

    #course-info-wrapper {
        max-width: 70rem;
        margin-top: 1rem;
        margin-inline: auto;
        display: grid;
        grid-template-areas: 
            "img info"
            "detail info";
    }

    #course-info-wrapper > *{
        margin-inline: 0;
        padding-inline: 0;
    }

    #course-info {
        min-width: 20rem;
        margin-inline: 2rem 2rem;
    }

    #course-image {
        aspect-ratio: 16/9;
        margin-block: 0;
        margin-bottom: 1rem;
        margin-inline: auto;
        max-width: 40rem;
        max-height: 20rem;
    }

    #course-image-wrapper {
        padding-left: 2rem;
    }

    #course-info-wrapper .side {
        max-width: 40rem;
        margin-inline: auto;
        padding-left: 2rem;
    }
}