html {
    --elt-bg-color: rgb(138, 162, 174);
    --elt-bg-color: rgb(172, 187, 195);
    --border-color: cadetblue;
    --border-color: #5f9ea0d8;
    /* background-color: #5061b073; */
    background-color: #3f6fb973;

    color: rgba(0, 0, 0, 0.89);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    /* font-family: Verdana, Geneva, Tahoma, sans-serif; */

}
html * {
    margin: 0;
    padding: 0;
    
    /* border: 1px solid black; */
}

#main-section {
    padding: 0 30px;
    /* margin: 0 auto; */
}
fieldset {
    margin: 2px;
    padding: 4px;
    border-radius: 2px;
    
    background-color: var(--elt-bg-color);
    border-color: var(--border-color);
}
legend {
    margin: 0 4px;
    padding: 0 2px;
}
details {
    position:absolute;
    z-index: 100;
    background-color: var(--elt-bg-color);
    border: 1px solid var(--border-color);
    padding: 0 8px 2px;
}
details[open] {
    /* position:absolute; */
}
canvas {
    background-color: var(--elt-bg-color);
    /* border: 1px solid black; */
}
input {
    padding: 2px 4px;
    /* background-color: var(--elt-bg-color);
    border: 1px solid var(--border-color); */
}
input[type=number] {
    background-color: rgb(221, 221, 221);
    border: 1px solid var(--border-color);
    border-radius: 2px;
}
input[type=button] {
    padding: 2px 6px;
    height: 24px;
}

.vert-flex {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    /* max-height: fit-content; */
}
.hor-flex {
    display: flex;
    flex-direction: row;
    /* max-width: fit-content; */
}