html, body {
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
}

.c {
    width: 180px;
    height: 80px;
}

.btn {
    display: block;
    width: 100%;
    height: 34px;
    line-height: 34px;
    border-radius: 24px;
    background-color: #ff3232;
    color: #e1e1e1;
    text-align: center;
    text-decoration: none;
}

.btn:last-child {
    margin-top: 12px;
}