style.css

html {
    overflow: hidden;
}

body {
    height: 100vh;
    margin: 0;
}

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

#dimmer {
    transition-property: z-index, opacity;
}

#dimmer:not(.active) {
    z-index: -1;
}

#main {
    display: flex;
    flex-direction: column;
    flex: 1;
    flex-grow: 1;
}

#menu {
    z-index: 1;
}

.ts.grid, .ts.grid > .row {
    margin: 0;
    flex: 1;
    flex-grow: 1;
}

.ts.grid > .row .column:not(.row) {
    display: flex;
    flex-direction: column;
    padding: 0;
    flex: 1;
    flex-grow: 1;
}

#code > .ts.tab.segment {
    padding: 0;
    margin: 0;
    height: 100%;
}

#code .editor {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    line-height: 17px;
}

[class*="ace"] {
    font: 14px/normal 'Monaco', 'Menlo', 'Consolas', 'source-code-pro', "微軟正黑體", "Microsoft YaHei", monospace !important;
}

#code, #preview {
    position: relative;
    overflow: hidden;
}

.iframe.wrapper {
    display: flex;
    flex: 1;
    flex-grow: 1;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
}

iframe {
    flex: 1;
    width: 100%;
    border: 0;
}

#label {
    width: 100%;
    background-color:slategray;
    color: white;
    padding: 5px 12px;
    font-size: 16px;
    display: block;
    min-height: calc(1em + 10px);
}

.logo {
    height: 35px;
    width: 35px;
}

.version {
    bottom: 0;
    margin-bottom: 10px !important;
    margin-top: 10px !important;
    margin: auto;
}