.body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

.container {
    padding: 15px;
}

.mail-box {
    background-color:#d9d9d9;
    border-radius: 30px;
    padding: 20px;
}

.mail-box input {
    border-radius: 10px;
    border: none;
}

.mail-box textarea {
    border-radius: 10px;
    border: none;
}

.mail-box form {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 15px;
}
.text-mail {
    grid-column: 1 /-1;
}

.mail-box input, .mail-box textarea {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
}

.text-mail textarea {
    min-height: 120px;
    resize: vertical;
}