main.css

html,
body {
    margin: 0;
    overflow-x: hidden;
    min-height: 100vh;

    font-size: 20px;
    font-family: Courier, monospace;
    letter-spacing: .08em;
}

body {
    height: 100%;
    display: flex;
    flex-direction: column;
}




body > * {
    box-sizing: border-box;
    padding: 0 1em;
}


/* Element Defaults */
img {
    max-width: 100%;
    display: block;
}
a {
    color: inherit;
    text-decoration: none;
}
a:active {
    color: inherit;
}
p {
    text-indent: 1em;
}
p img {
    margin: .2em auto;
}
code {
    opacity: .7;
}
code,
textarea {
    font-size: .8em;
}
textarea {
    resize: none;
    max-width: 100%;
}


/* Flex Classes */
.flex {
    display: flex;
    align-items: center;
}

.flex__row              { flex-direction:   row         }
.flex__column           { flex-direction:   column      }
.flex__row-reverse      { flex-direction:   row-reverse }
.flex__wrap             { flex-wrap     :   wrap        }
.flex__space-around     { justify-content: space-around; }
.flex-child__stretch    { align-self    :   stretch     }

.flex p {
    margin: 1em;
    max-width: 800px;
}


/* Center */
.center {
    display: block !important;
    margin-left: auto !important;
    margin-right: auto !important;
}
.center:not( img ) {
    width: fit-content;
}

.center-within {
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}



input[type=number] {
    width: 8ch;
}

canvas {
    height: 50px;
    width: 100%;
}
td:has(canvas) {
    width: 100%;
    max-width: 1000px;
}

#schematic {
    position: relative;
    max-width: 1000px;
    width: 100%;
    height: 100%;
}

#schematic img {
    visibility: hidden;
}
#schematic img:not(:first-child) {
    position: absolute;
}
#schematic img {
    top: 0;
    left: 0;
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
}