BlazorMonaco/docs/css/app.css

html,
body {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

#app {
    position: relative;
    display: flex;
    flex-direction: column;
}

@media (min-width: 768px) {
    #app {
        flex-direction: row;
    }
}

.loading-progress-text {
    flex: 1;
    text-align: center;
    margin-top: 50px;
    font-size: 20px;
    font-weight: bold;
}

.loading-progress-text:after {
    content: var(--blazor-load-percentage-text, "Loading");
}

#blazor-error-ui {
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

.monaco-editor-container {
    height: 500px;
    border: 1px solid gray;
    position: relative;
}

.decorationGlyphMarginClass {
    background: red;
}

.decorationContentClass {
    background: lightblue;
}