html {
    font-size: 1rem;
}

body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
}

h1 {
    font-size: 2rem;
}

p {
    font-size: 1rem;
}

form {
    background-color: #ddd;
    padding: 10px;
}

details {
    background-color: #fff;
    padding: 10px;
    border-radius: 2rem;
}

div.row {
    margin: 10px;
}

div.sub-row, div.checkbox-group {
    display: inline-block;
    margin-left: 3rem;
}

summary, label, span.row-label {
    background-color: #cfc;
    font-size: 1.2rem;
    font-weight: bold;
    margin: 10px;
}

label.checkbox-label {
    font-size: 1rem;
    margin: 1em
}

input[type="text"]{
    background-color: #aaa;
    font-size: 1rem;
    margin: 10px;
    padding: 5px;
    border-radius: 1rem;
    border: none;
}

input[type="checkbox"] {
    border: none;
    border-radius: 1rem;
}

button {
    background-color: #fff;
    margin: 1rem;
    padding: 0.5em;
}

button:hover {
    background-color: #aaa;
}

.radius {
    border-radius: 10em;
    border: none;
}

div.course-data {
    background-color: #ddd;
    padding: 10px;
    margin: 3rem;
}

table {
    border-collapse: collapse;
    width: 100%;
}

td, th {
    display: table-cell;
    text-align: left;
    /* border: 1px solid #ddd; */
    padding: 8px;
}

tr {
    display: table-row;
    
}

tr:nth-child(odd) {
    background-color: #fff;
}

tr:nth-child(even) {
    background-color: #f2f2f2;
}

tr:hover {
    background-color: #ddd;
}