@media only screen and (max-width: 480px) {
    header {
        padding: 10px;
    }

    .buton-1 a {
        font-size: 16px;
    }

    .start-icon {
        font-size: 18px;
    }

    .content {
        width: 90%;
    }

    .data-i {
        padding: 10px;
    }

    .add-btn {
        height: 40px;
        width: 40px;
        top: -5px;
        right: -20px;
    }

    .bor-2 {
        padding: 8px;
    }

    .tas-1 {
        font-size: 16px;
    }
}