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

a {
    color: #667eea;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}

button {
    cursor: pointer;
}

input, select, textarea {
    font-family: inherit;
}

.clearfix::after {
    content: "";
    display: table;
    clear: both;
}

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.hidden {
    display: none;
}