index.css

body, html {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    display: flex;
    flex-direction: row;
}

#screen-container {
    flex: 1;
    position: relative;
    overflow: auto;
}

#screen {
    position: absolute;
    top: calc(50% - 250px);
    left: calc(50% - 250px);
    border: 1px solid blue;
}

#status {
    height: 100%;
    border-left: 3px solid black;
    padding: 1em;
    box-sizing: border-box;
    overflow-y: auto;
    width: 300px;
}

.template {
    display: none;
}

#list {
    display: table;
    padding: 1em;
}

.row {
    display: table-row;
}

.row>div {
    display: table-cell;
    padding: 0.2em;
}

.color {
    width: 1em;
    height: 1em;
}

.name {
    max-width: 130px;
    overflow: hidden;
    text-overflow: ellipsis;
}

#input {
    background: white;
    border: 1px solid black;
    position: fixed;
    z-index: 9999;
    top: 50%;
    left: 50%;
    transform: translateX(-50%) translateY(-50%);
    padding: 1em;
    display: none;
    min-width: 50%;
    min-height: 50%;
    max-width: 95%;
    max-height: 95%;
    box-sizing: border-box;
    flex-direction: column;
}

#input.active {
    display: flex;
}

#input #code-container {
    flex: 1;
    overflow-y: auto;
}

#input #code-container-inner {
    display: flex;
    flex-direction: row;
}

#input #bot-code, #input #line-numbers {
    font-family: monospace;
    font-size: 10pt;
    align-self: stretch;
}

#input #line-numbers {
    border-top: 1px solid transparent;
    padding-bottom: 1em;
    padding-top: 0.2em;
}

#input #bot-code {
    flex: 1;
    overflow-y: hidden;
    overflow-x: auto;
    word-wrap: normal;
    resize: horizontal;
}