编辑了我的风格，但搞砸了移动视图

Question

我为我的新主题编辑了样式，但似乎无法找到移动视图的问题来修复它。任何帮助将不胜感激。这是我到目前为止在Mobile视图上制定的内容。另外，有没有办法使用mac检查移动设备上的元素？感谢。

/* ************************************************************** */
/* Mobile 0px - 720px */
/* ************************************************************** */
@media only screen and (max-width: 719px) {

/* Grid */
.grid_1,.grid_2,.grid_3,.grid_4,.grid_5,.grid_6,.grid_7,.grid_8,.grid_9,.grid_10,.grid_11,.grid_12{margin-left:10px;margin-right:10px;clear:both}.alpha,.omega{margin-left:0;margin-right:0}.align_center,.align_right{text-align:left}

.gbtr_tools_info {
    display:none;
}

.mobiles_menus_wrapper {
    float:none;
    max-width:270px;
    margin:0px auto 0 auto;
    height:auto;
}

.gbtr_poduct_details_left_col {
    width:300px;
    float:none;
    margin:0 auto;
}

.gbtr_poduct_details_left_col {
    width:300px;
    float:none;
    margin:0 auto;
}

.doubleSlider-1 img {
    width:300px;
    height:auto;
}

.gbtr_poduct_details_right_col {
    width:300px;
    float:none;
    margin:0 auto;
}

.product_navigation.mobiles .nav-back {
    display:none;
}

.gbtr_product_share ul li {
    margin:0 10px;
    width:50px;
    overflow:hidden;
}

.gbtr_product_share ul li a {
    padding: 8px 0px 0 60px;
}

div.product .woocommerce_tabs ul.tabs, #content div.product .woocommerce_tabs ul.tabs,
div.product .woocommerce-tabs ul.tabs, #content div.product .woocommerce-tabs ul.tabs {
    border: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    border-right: 0px !important;
    width: 100% !important;
    padding: 20px 0 20px 0 !important;
}

div.product .woocommerce_tabs .panel, #content div.product .woocommerce_tabs .panel,
div.product .woocommerce-tabs .panel, #content div.product .woocommerce-tabs .panel {
    padding: 0 !important;
    border-left: 0;
}

div.product .woocommerce_tabs ul.tabs li, #content div.product .woocommerce_tabs ul.tabs li,
div.product .woocommerce-tabs ul.tabs li, #content div.product .woocommerce-tabs ul.tabs li {
    width: 100% !important;
}

.product_main_infos span.onsale {
    top: -20px;
    left: 220px;
}

.single_add_to_cart_button {
    width:160px;
}

.testimonial_left_content {
    width:89%;
    padding:5%;
    float:none;
}

.testimonial_left_author {
    width:95%;
    float:none;
    margin-top:30px;
}

.testimonial_left_author img {
    float:left;
    margin-right:20px;
    max-width:50px !important;
}

.testimonial_left_author h4 {
    padding-top:5px;
}

.testimonial_left_content:after, .testimonial_left_content:before {
    top: 100%;
    border: solid transparent;
    content: " ";
    height: 0;
    width: 0;
    position: absolute;
    pointer-events: none;
}

.testimonial_left_content:after {
    border-color: rgba(255, 255, 255, 0);
    border-top-color: #fff;
    border-width: 15px;
    left: 50px;
    margin-left: -15px;
}

.testimonial_left_content:before {
    border-color: rgba(204, 204, 204, 0);
    border-top-color: #ccc;
    border-width: 16px;
    left: 50px;
    margin-left: -16px;
}

.testimonial_right_content {
    width:89%;
    padding:5%;
    float:none;
}

.testimonial_right_author {
    margin-top:30px;
    width:95%;
    float:none;
}

.testimonial_right_author img {
    float:left;
    margin-right:20px;
    max-width:50px !important;
}

.testimonial_right_author h4 {
    padding-top:5px;
}

.testimonial_right_content:after, .testimonial_right_content:before {
    top: 100%;
    border: solid transparent;
    content: " ";
    height: 0;
    width: 0;
    position: absolute;
    pointer-events: none;
}

.testimonial_right_content:after {
    border-color: rgba(255, 255, 255, 0);
    border-top-color: #fff;
    border-width: 15px;
    left: 50px;
    margin-left: -15px;
}

.testimonial_right_content:before {
    border-color: rgba(204, 204, 204, 0);
    border-top-color: #ccc;
    border-width: 16px;
    left: 50px;
    margin-left: -16px;
}

.listing_products_no_sidebar {
    max-width:100% !important;
    text-align:center;
}

.listing_products_no_sidebar .filter_wrapper {
    right: 0px;
}

.listing_products_no_sidebar .category_header {
    padding: 0;
}

#mc_signup_submit {
    width:100px !important;
}

.widget input[type="text"], .widget input[type="password"] {
    width: 84% !important;
}

.from_the_portfolio {
    width:100%;
    text-align:center;
}

.from_the_portfolio_item  { 
    float:none;
    display:inline-block;
    margin:10px 0 20px 0 !important;
}

ul.products {
    width:100%;
    text-align:center;
}

.product_item {
    float:none;
    display:inline-block;
    margin:0 0px 30px 0px !important;
}

/*.featured_products_slider .gbtr_items_slider {
    height: 500px;
}

.featured_products_slider_item  {   
    width:220px;
}*/

.style_1 .products_slider_item  {   
    width:320px;
}

.style_1 .products_slider_images {
    width:300px;
}

.gbtr_left_column_my_account {
    margin:0;
    padding:0;
    border-right: 0;
}

.gbtr_left_column_my_account:after, .gbtr_left_column_my_account:before {
    content:normal;
}

.gbtr_left_column_my_account ul.menu_my_account {
    padding: 0 0 30px 0 !important;
}

.entry-title {
    text-align:center;
}

.gbtr_logo {
    padding:0 0;
    display:block;
    margin:20px auto -20px auto;
    width:270px;
    position:relative;
    max-height:100px;
    overflow:hidden;
}

.listing_products_no_sidebar .filter_wrapper {
    position:relative;
    margin:10px 0 0 0 !important;
    text-align:center;
}

footer.entry-meta .comments-link {
    display:none;
}

.edit-link {
    display:none;
}

.gbtr_logo {
    left:0px;
}

.gbtr_items_slider.from_the_blog
{
    /* required */
    height: 400px;
}

.from_the_blog_item  {  
    width:250px !important;
    padding-right:0px !important;
    list-style:none !important;
}

.from_the_blog_item:last-child  {   
    width:200px;
}

.from_the_blog_content {
    width:190px;
}

.from_the_blog_img {
    margin-bottom:10px !important;
}

}

/* ************************************************************** */
/* Mobile 480px - 720px */
/* ************************************************************** */
@media only screen and (min-width: 480px) and (max-width: 719px) {

.gbtr_poduct_details_left_col {
    width:460px;
    float:none;
    margin:0 auto;
}

.gbtr_poduct_details_right_col {
    width:460px;
    float:none;
    margin:0 auto;
}

.product_main_infos span.onsale {
    top: -20px;
    left: 380px;
}

.doubleSlider-1 img {
    width:480px;
    height:auto;
}

.gbtr_product_share ul li {
    margin:0 20px;
}

.listing_products {
    width:473px;
    padding-left:0px;
    text-align:center;
}

.from_the_portfolio_item  { 
    float:none;
    display:inline-block;
    margin:10px 20px 20px 0 !important;
}

.product_item {
    float:none;
    display:inline-block;
    margin:0 50px 30px 0px !important;
}

}

/* ************************************************************** */
/* Mobile 0px - 479px */
/* ************************************************************** */
@media only screen and (max-width: 479px) {


}

/*****************************************************************************************************/
/******************************************* /Media Queries ******************************************/
/*****************************************************************************************************/