body {
    /*background-color: skyblue;*/

    .btn {
        border-radius: 5px;
        padding: 10px 15px;
        font-weight: bold;
        cursor: pointer;
        &.btn-primary {
            background-color: rgb(53, 100, 255);
            color: white;
        }
        &.btn-danger {
            background-color: red;
            color: white;
        }
    }
}