html {
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    align-items: center;
    width: 100vw;

}
*,
*::before,
*::after {
    box-sizing: inherit;
     margin: 0;
}
:root {
    --secondary-color: #2a2a2d;
    --artical-width: 130ch;
    --border-color: #5A5A60;
}
body {
    margin: 0;
    color: #D4D0D8;
    background-color: #1C1C1E;
    font-family: "IBM Plex Sans", system-ui, sans-serif;;
    font-size: 1.0625rem;
    line-height: 1.65;
}
h1,
h2 {
    line-height: 1.1;
}

header {
    border: var(--border-color) solid 1px;
    border-radius: 10px;
    background-color: var( --secondary-color);
    text-align: center;
    margin-top: 40px;
    margin-bottom: 20px;
    background-image:url("topography.svg");background-size:cover;
    max-width: var(--artical-width);

    padding: 2rem 1.5rem;


}
header h1 {
    font-size: 3rem;
    font-weight: 500;
    margin: 0 0 0 4px;
}
header p {
    font-size: 1.35rem;
    color: #A0A0A8;
}
nav {
    border: var(--border-color) solid 1px;
    background-color: var( --secondary-color);
    background-color: var( --secondary-color);
    text-align: center;
    min-height: 50px;
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 10px;
    padding: 0;
    background-image:url("topography.svg");background-size:cover;
    max-width: var(--artical-width);
    display: flex;
    align-content: center;
    align-items: center;
    position: sticky;
    top: 1rem;
    z-index: 2;

}
nav a {
    text-decoration: none;
    display: inline-block;
    color: #5B9DFF;
    font-size: 1.5rem;

    margin-top: 5px;
    margin-bottom: 5px;
    width: 50%;


}
nav a:hover {
    color: #4C7ABE;
    background-color: #343438;
    border-radius: 7px;

}

.example-link {
    color: #5B9DFF;
}
.example-link:hover {
        text-decoration-thickness: 3px;
    text-decoration-color:#4C7ABE ;

}

main {
    display: flex;
    align-content: center;
    align-content: center;
    justify-content: center;
    flex-direction: row-reverse;

}




article {
    border: var(--border-color) solid 1px;
    margin: 0 auto;
    padding: 20px;
    margin: 0;
    display: flex;
    flex-flow: row-reverse;
    justify-content: space-between;
    border-radius: 10px;
    max-width: var(--artical-width);
    position: relative;
    align-items: start;
    margin: 1rem auto;




}

aside {
    border: var(--border-color) solid 1px;
    background-color: var( --secondary-color);
    background-image:url("topography.svg");
    border-radius: 10px;
    min-height: 20rem;
    padding: 2rem  1.5rem;
    margin-top: 1rem;
    margin-right: 1.5rem;
    width: 26rem;
    position: sticky;
    top: calc(3rem + 50px );

}
aside h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
}
aside li {
    text-align: left;
    font-size: 1.175rem;
}


.content {
    display: flex;
    flex-direction: column;
    margin-left:3rem ;
    width: min(100% - 2rem, 75ch);
}
section {
    border: var(--border-color) solid 1px;
    padding:2rem 1rem 2rem 1rem;
    margin: 0;
    background-color: var( --secondary-color);
    border-radius: 10px;
    background-image:url("topography.svg");
    background-size:cover;
    margin: 1rem 0;
    scroll-margin-top: calc(3rem + 50px );
    font-size: 1.2rem;

}

section h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}
section p {
    font-size: var(--text-size);

}
section span {
    background-color: #1C1C1E;
    padding: 2px 4px;
    font-family: "Space Mono", monospace;
    order: 1px solid #e1e1e1;
    border-radius: 4px;
    font-size: 0.9em;
}

#text .element {
    margin: 0 auto;
    width: 10rem;
}
#text tr {
    height: 3rem;
}
.list-section h3 {
    font-size: 1.6rem;
 }
.list-section .lists {
    display: flex;
    flex-direction: row;
}
.list-section div div {
    width: 33.33333%;
}

.list-section .unordered-list {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.list-section .unordered-list ul {
    padding-left: 20px;
    
}
.list-section .ordered-list {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.list-section ol {
    padding-left: 20px;

}
dl > dt {
    font-weight: 700;
    font-size: 1.2rem;
}

dl > dd {
    font-size: 1.2rem;
    color: #A0A0A8;
}




footer {
    border: var(--border-color) solid 1px;
    text-align: center;
    border-radius: 10px;
    margin: 1rem auto;
    font-size: 1.35rem;
    color: #A0A0A8;
    min-height: 50px;

}
footer p {
    margin: 1rem auto;
}

img {
    margin: 0 auto;
    max-width: 100%;
    height: auto;
}