common.css

* {
    font-family: "Segoe UI", Arial, "Microsoft Yahei", sans-serif;
    margin: 0;
    padding: 0;
}

a {
    color: #0366d6;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.repo-link {
    margin-left: 8px;
    font-size: 0;
    padding: 5px;
}

.repo-link:hover {
    background: #E9EBEC;
    border-radius: 3px;
}

.repo-link img {
    width: 20px;
    height: 20px;
}

.container {
    width: 60%;
    margin: 0 auto;
    padding: 15px 0;
}

@media screen and (max-width: 760px) {
    .container {
        width: 90%;
    }

    .github {
        display: none;
    }
}

.tools {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.btn-run {
    background-color: #007acc;
    cursor: pointer;
    border: none;
    padding: 8px 25px;
    border-radius: 3px;
    color: #fff;
}

.github {
    position: absolute;
    right: 0;
    top: 0;
}

.star {
    position: absolute;
    right: 0;
    top: 8px;
}

.error {
    color: red;
}

textarea {
    display: block;
    border: 1px solid #dfe2e5;
    width: 100%;
    box-sizing: border-box;
    padding: 5px;
}

.code {
    height: 400px;
}

.code-lib {
    height: 100px;
}

.version {
    margin-left: 10px;
    font-size: 14px;
}

.results-container {
    position: relative;
    padding: 5px;
    border: 1px solid #dfe2e5;
    margin-top: -1px;
}

.results-label {
    font-size: 14px;
    margin-bottom: 5px;
}

.results {
    font-size: 14px;
    min-height: 18px;
}

.example-item {
    padding: 10px 0;
}