html {
    font-family: "Open Sans", sans-serif;
    font-optical-sizing: auto;
    font-weight: normal;
    font-style: normal;
    font-variation-settings: "wdth" 100;
    background-color: #18191a;
    margin-left: 15%;
    margin-right: 15%;
    color: #e4e6eb
}
h1 {
    background-color: #A1A1A1;
    color: black;
    display: flex;
    flex-direction: column;
    text-align: center;
    align-items: center;
    align-content: center;
    justify-content: center;
    padding: 10px;
    margin-block: 40px;
}
h1.a {
    padding: 5px;
}
/* toc class is for the Table of Contents page */
h1.toc {
    margin-bottom: 40px;
}
.list {
    display: flex;
    flex-direction: column;
    align-items: center;
    list-style-type: none;
}
li {
    margin-bottom: 10px;
}
/* toc class is for the Table of Contents page */
a.toc {
    font-size: x-large;
    text-decoration: none;
    margin: 30px;
    background-color:#a1a1a1;
    border-color:#111;
    border-style: solid;
    border-width: .2em;
    border-radius: .15em;
    outline-style: solid;
    outline-color: #d500f9;
    outline-width: .2em;
    width: 65vw;
    padding: .5em;
    text-align: center;
}
a.toc:link {
    color: black;
}
a.toc:visited {
    color: black;
}
a:link {
    color: #d500f9;
}
a:visited {
    color: #d500f9;
}
.top-link {
    display: flex;
    justify-content: flex-end;
    padding-bottom: 20px;
    padding-right: 20px;
}
.images {
    height: 300;
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: 20px;
    margin-bottom: 20px;
    border-style: solid;
    border-color: black;
    border-width: 5;
}
.columns-container {
    display: flex;
    flex-direction: row;
}
.columns-element {
    display: inline;
    width: 50%;
    margin-bottom: 20px;
}
.summary-text {
    align-content: center;
    margin-bottom: 20px;
}
.sub-list {
    margin-top: 10;
}
.product-category-description {
    text-indent: 25px;
    padding-block: 10px;
}
.product-list {
    list-style-type: none;
}
.product-icon {
    padding: 15px;
}
.product-links {
    display: flex;
    align-items: center;
}
@media screen and (max-width: 600px) {
    html {
        margin-left: 2%;
        margin-right: 2%;
    }
    h1 {
        flex-direction: column;
    }
    .product-category-description {
        text-indent: 0%;
        text-align: center;
    }
    .images {
        max-width: 96%;
        width: auto;
        height: auto;
    }
    .columns-container {
        flex-direction: column;
    }
    .columns-element {
        width: 100%;
    }
}