xterm.js/demo/index.css

body {
    font-family: helvetica, sans-serif, arial;
    font-size: 1em;
    color: #111;
    margin: 0;
    padding: 0;
    height: 100vh;
    display: grid;
    grid-template-rows: 24px 1fr;
    overflow: hidden;
}

#banner {
    background: #161716;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 15px;
}
.banner-title {
    color: #5DA5D5;
    font-weight: bold;
    font-size: 14px;
}
.banner-tabs {
    display: flex;
    gap: 2px;
}
.banner-tabs button {
    background: transparent;
    border: none;
    color: #ccc;
    padding: 4px 10px;
    cursor: pointer;
    font-size: 12px;
    outline-offset: -1px;
}
.banner-tabs button:hover {
    background: rgba(255,255,255,0.1);
}
.banner-tabs button.active {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

p {
    font-size: 0.9em;
    font-style: italic
    
}
dl:first-child,
p:first-child {
    margin-top: 0;
}

#option-container {
    display: flex;
    justify-content: center;
}

.option-group {
    display: inline-block;
    padding-left: 20px;
    vertical-align: top;
}

pre {
    display: block;
    padding: 9.5px;
    font-size: 13px;
    color: #c7254e;
    background-color: #f9f2f4;
    word-break: break-all;
    word-wrap: break-word;
    white-space: pre-wrap;
}


#container {
    display: flex;
    position: relative;
    min-height: 0;
}
.grid {
    flex: 1;
    width: 100%;
    min-width: 100px;
}
div:first-of-type.grid {
    flex: 2;
    height: 100%;
}

/* Sidebar */
#sidebar {
    position: fixed;
    top: 24px;
    right: 15px; /* Room for scrollbar */
    width: 400px;
    max-width: calc(100vw - 30px); /* Don't exceed screen width minus scrollbar */
    height: 500px;
    background: #161716;
    color: #fff;
    border: 1px solid #333;
    border-top: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.4);
    z-index: 1000;
    overflow: auto;
    flex: none;
    opacity: 0.5;
    transition: opacity 0.1s;
}
#sidebar:hover {
    opacity: 1;
}
#sidebar.sidebar-hidden {
    display: none;
}

/* Resize handles */
#sidebar-resize-handle-horizontal {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 6px;
    cursor: ew-resize;
    background: transparent;
}
#sidebar-resize-handle-horizontal:hover {
    background: rgba(0, 120, 212, 0.3);
}
#sidebar-resize-handle-vertical {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 6px;
    cursor: ns-resize;
    background: transparent;
}
#sidebar-resize-handle-vertical:hover {
    background: rgba(0, 120, 212, 0.3);
}
#sidebar-resize-handle-corner {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 12px;
    height: 12px;
    cursor: nesw-resize;
    background: transparent;
}
#sidebar-resize-handle-corner:hover {
    background: rgba(0, 120, 212, 0.5);
}

/* Style the tab content */
.tabContent {
    display: none;
    padding: 6px 12px;
    border-top: none;
}

#texture-atlas-zoom:checked ~ #texture-atlas canvas {
    /* Zoom atlas to the width of the container*/
    width: 100% !important;
    height: auto !important;
}
#texture-atlas {
    width: 100%;
}
#texture-atlas canvas {
    image-rendering: pixelated;
    border: 1px solid #ccc;
}

.vt-button * {
  margin-right: 1em;
}
input#opt-cols_rows {
    width: 6em;
}