style.css

* {
    margin: 0;
    padding: 0;
    outline: none;
    text-decoration: none;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
}

body {
    font-family: monospace;
    color: white;
    background-color: black;
    margin: 10px;
}

pre.canvas {
    display: inline-block;
    margin: 0;
    padding: 5px 0 5px 5px;
    letter-spacing: 8px;
    border: 1px solid gray;
}

.ui {
    margin: 0 10px;
}

.ui .inventory {
    display: flex;
}

.ui .log {
    margin: 10px 0;
}

.options {
    margin: 10px 0;
}

h2 {
    margin: 10px 0 5px;
    font-size: 16px;
}



/* Utils */
.flex {
    display: flex;
}

.flex.row {
    flex-direction: row;
}

.flex.column {
    flex-direction: column;
}

.flex.center {
    align-items: center;
    justify-content: center;
}

.flex.h-center,
.flex.row.h-center,
.flex.column.v-center {
    justify-content: center;
}

.flex.v-center,
.flex.row.v-center,
.flex.column.h-center {
    align-items: center;
}

.dot {
    min-width: 3px;
    min-height: 3px;
    margin: 0 8px;
    border-radius: 50%;
    background-color: white;
    opacity: 0.4;
}