mixi-inc/RubyTraining

body {
    background-color: #f6f6f6;
    padding-top: 30px;
}
h1 {
    font-size: 36px;
    margin-bottom: 20px;
}
h2 {
    font-size: 24px;
}
h3 {
    font-size: 16px;
}
h4 {
    font-size: 16px;
    font-weight: 700;
}
h5 {
    font-size: 16px;
}
h5:hover {
    cursor: pointer;
    color: #2c44b6;
    font-weight: 700;
    text-decoration: underline;
}

h5:after {
    font-size: 12px;
    margin-left: 10px;
    content: "(クリックするとヒントを表示)";
}

.main {
    background-color: #fff;
    border: 1px solid #CCC;
    padding: 40px;
}
.main h3 {
    margin-top: 18px;
}
.main h3:before {
    content: attr(data-content);
}
.main h3+section {
    background: #f6f6f6;
    padding: 10px;
}
.main h5+section {
    display: none;
}

.sidebar {
    background-color: #fff;
    border: 1px solid #CCC;
    padding: 20px;
    background: fixed;
}
.sidebar > h1 {
    font-size: 18px;
    margin: 0;
}

.container {
    width: 1100px;
}