vendure/packages/graphiql-plugin/src/ui/styles.css

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body.embedded-mode,
body.embedded-mode html {
    background: transparent;
}

.graphiql-container {
    height: calc(100vh - 40px);
}

.vendure-header {
    background-color: #13b7f3;
    color: white;
    height: 40px;
    padding: 0 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.vendure-header h1 {
    margin: 0;
    font-size: 18px;
    font-weight: 500;
}

.switch-api {
    display: flex;
    align-items: center;
    gap: 8px;
}

.switch-api a {
    color: white;
    text-decoration: none;
    padding: 4px 12px;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.switch-api a.active {
    background-color: rgba(255, 255, 255, 0.2);
    font-weight: bold;
}

.switch-api a:hover:not(.active) {
    background-color: rgba(255, 255, 255, 0.1);
}

.graphiql-wrapper {
    height: calc(100vh - 40px);
}

body.embedded-mode .graphiql-wrapper {
    height: 100vh;
}

body.embedded-mode .graphiql-container {
    height: 100vh;
}