* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background: #eff4f2;
    color: #18342b;
    font: 16px/1.55 system-ui, sans-serif;
}

.card {
    width: min(100%, 540px);
    padding: 38px;
    text-align: center;
    background: white;
    border: 1px solid #dce7e1;
    border-radius: 22px;
    box-shadow: 0 18px 50px rgba(24, 52, 43, .1);
}

.brand { color: #267153; font-weight: 800; }
h1 { margin: 26px 0 10px; font-size: 28px; line-height: 1.2; }
p { color: #587067; }

button,
.button {
    display: inline-block;
    margin-top: 12px;
    padding: 14px 22px;
    border: 0;
    border-radius: 999px;
    background: #267153;
    color: white;
    font: 700 16px system-ui, sans-serif;
    text-decoration: none;
    cursor: pointer;
}

.secondary { background: #e4ece8; color: #27473b; }
.subject { overflow-wrap: anywhere; font-size: 12px; }

.avatar {
    width: 64px;
    height: 64px;
    display: grid;
    place-items: center;
    margin: 24px auto 0;
    border-radius: 50%;
    background: #dcebe4;
    color: #267153;
    font-size: 26px;
    font-weight: 800;
}