在手机上两边都有填充

Question

在我的site 上，手机上home-boxes 类下的项目左侧似乎有额外的填充。如何避免？

<div class="container">
<div class="row space" >

        <div class="col-md-3 col-xs-12 ">
            <a href="http://www.inspuratesystems.com/clf/why-we-are-needed/">
            <img class="center-block" src="http://www.inspuratesystems.com/clf/wp-content/uploads/2015/12/11.jpg">
            <div class="col-xs-12" id="home-boxes">
            <h3>Why we are needed</h3>
            <p>More than half of Karachi’s population lives in low-resource densely-packed neighborhoods, where there are few or no qualified doctors conveniently located. Pollution is high, and diseases are rampant.</p>
            </div>
            </a>
        </div>
        <div class="col-md-3 col-xs-12 ">
            <a href="http://www.inspuratesystems.com/clf/emergency-care-2/">
            <img class="center-block"  src="http://www.inspuratesystems.com/clf/wp-content/uploads/2015/12/21.jpg">
            <div class="col-xs-12" id="home-boxes" >
            <h3>Emergency Care</h3>
            <p>During the floods of 2010, CNN correspondent Dr. Sanjay Gupta did a news segment on the dilapidated children’s emergency room (ER) at Civil Hospital, Karachi.</p>
            </div>
            </a>
        </div>
        <div class="col-md-3 col-xs-12">
            <a href="http://www.inspuratesystems.com/clf/primary-care-2/">
            <img class="center-block"  src="http://www.inspuratesystems.com/clf/wp-content/uploads/2015/12/3.jpg">
            <div class="col-xs-12" id="home-boxes">
            <h3>Primary Care</h3>
            <p>ChildLife Foundation initiated a partnership with SINA Trust in 2012 under the leadership of their common trustee, Dr. Naseeruddin Mahmood. Since 1998, SINA has been operating primary care clinics in low-income.</p>
            </div>
            </a>
        </div>
        <div class="col-md-3 col-xs-12">
            <a href="http://www.inspuratesystems.com/clf/preventive-care/">
            <img class="center-block"  src="http://www.inspuratesystems.com/clf/wp-content/uploads/2015/12/5.jpg">
            <div  class="col-xs-12" id="home-boxes">
            <h3>Preventive Care</h3>
            <p>394,000 children in Pakistan die before their fifth birthdays. 122,000 of them did not make it past their first year of life. As a result, Pakistan has the third highest mortality rate in the world, primarily because of preventable... </p>
            </div>
            </a>
        </div>
    </div>
    </div> 

CSS：

/*
Theme Name: Child Life Foundation
Theme URI: http://underscores.me/
Author: Fahad Uddin
Author URI: http://underscores.me/
Description: Inspurate has created a website template for Child Life Foundation
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: child-life-foundation
Tags:

This theme, like WordPress, is licensed under the GPL.
Use it to make something cool, have fun, and share what you've learned with others.

Child Life Foundation is based on Underscores http://underscores.me/, (C) 2012-2015 Automattic, Inc.
Underscores is distributed under the terms of the GNU GPL v2 or later.

Normalizing styles have been helped along thanks to the fine work of
Nicolas Gallagher and Jonathan Neal http://necolas.github.com/normalize.css/
*/

/*--------------------------------------------------------------
>>> TABLE OF CONTENTS:
----------------------------------------------------------------
# Normalize
# Typography
# Elements
# Forms
# Navigation
    ## Links
    ## Menus
# Accessibility
# Alignments
# Clearings
# Widgets
# Content
    ## Posts and pages
    ## Asides
    ## Comments
# Infinite scroll
# Media
    ## Captions
    ## Galleries
--------------------------------------------------------------*/

/*--------------------------------------------------------------
# Normalize
--------------------------------------------------------------*/

html {
    font-family: sans-serif;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust:     100%;
}

body {
    margin: 0;
}

article,
aside,
details,
figcaption,
figure,
footer,
header,
main,
menu,
nav,
section,
summary {
    display: block;
}

audio,
canvas,
progress,
video {
    display: inline-block;
    vertical-align: baseline;
}

audio:not([controls]) {
    display: none;
    height: 0;
}

[hidden],
template {
    display: none;
}

a {
    background-color: transparent;
    color:#dbff98;
}

a:active,
a:hover {
    outline: 0;
}

abbr[title] {
    border-bottom: 1px dotted;
}

b,
strong {
    font-weight: bold;
}

dfn {
    font-style: italic;
}

h1 {
    font-size: 2em;
    margin: 0.67em 0;
}

mark {
    background: #ff0;
    color: #000;
}

small {
    font-size: 80%;
}

sub,
sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
}

sup {
    top: -0.5em;
}

sub {
    bottom: -0.25em;
}

img {
    border: 0;
}

svg:not(:root) {
    overflow: hidden;
}

figure {
    margin: 1em 40px;
}

hr {
    box-sizing: content-box;
    height: 0;
}

pre {
    overflow: auto;
}

code,
kbd,
pre,
samp {
    font-family: monospace, monospace;
    font-size: 1em;
}

button,
input,
optgroup,
select,
textarea {
    color: inherit;
    font: inherit;
    margin: 0;
}

button {
    overflow: visible;
}

button,
select {
    text-transform: none;
}

button,
html input[type="button"],
input[type="reset"],
input[type="submit"] {
    -webkit-appearance: button;
    cursor: pointer;
}

button[disabled],
html input[disabled] {
    cursor: default;
}

button::-moz-focus-inner,
input::-moz-focus-inner {
    border: 0;
    padding: 0;
}

input {
    line-height: normal;
}

input[type="checkbox"],
input[type="radio"] {
    box-sizing: border-box;
    padding: 0;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    height: auto;
}

input[type="search"] {
    -webkit-appearance: textfield;
    box-sizing: content-box;
}

input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-decoration {
    -webkit-appearance: none;
}

fieldset {
    border: 1px solid #c0c0c0;
    margin: 0 2px;
    padding: 0.35em 0.625em 0.75em;
}

legend {
    border: 0;
    padding: 0;
}

textarea {
    overflow: auto;
}

optgroup {
    font-weight: bold;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

td,
th {
    padding: 0;
}

/*--------------------------------------------------------------
# Typography
--------------------------------------------------------------*/


body,
button,
input,
select,
textarea {
    color: #404040;
/*  font-family: sans-serif;
*/
    font-size: 16px;
    font-size: 1rem;
    line-height: 1.5;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    clear: both;
    text-transform: uppercase;
    color:#9bbd1b;
}

p {
    margin-bottom: 1.5em;
}

dfn,
cite,
em,
i {
    font-style: italic;
}

blockquote {
    margin: 0 1.5em;
}

address {
    margin: 0 0 1.5em;
}

pre {
    background: #eee;
    font-family: "Courier 10 Pitch", Courier, monospace;
    font-size: 15px;
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 1.6em;
    max-width: 100%;
    overflow: auto;
    padding: 1.6em;
}

code,
kbd,
tt,
var {
    font-family: Monaco, Consolas, "Andale Mono", "DejaVu Sans Mono", monospace;
    font-size: 15px;
    font-size: 0.9375rem;
}

abbr,
acronym {
    border-bottom: 1px dotted #666;
    cursor: help;
}

mark,
ins {
    background: #fff9c0;
    text-decoration: none;
}

big {
    font-size: 125%;
}

/*--------------------------------------------------------------
# Elements
--------------------------------------------------------------*/
html {
    box-sizing: border-box;
}

*,
*:before,
*:after { /* Inherit box-sizing to make it easier to change the property for components that leverage other behavior; see http://css-tricks.com/inheriting-box-sizing-probably-slightly-better-best-practice/ */
    box-sizing: inherit;
}

body {
    background: #fff; /* Fallback for when there is no custom background color defined. */
}

blockquote:before,
blockquote:after,
q:before,
q:after {
    content: "";
}

blockquote,
q {
    quotes: "" "";
}

hr {
    background-color: #ccc;
    border: 0;
    height: 1px;
    margin-bottom: 1.5em;
}

ul,
ol {
    /* margin: 0 0 1.5em 3em; */
    /* margin: 0 0 1.5em 3em; */
    /* margin: 0 0 1.5em -2em; */
}

ul {
    list-style: disc;
}

ol {
    list-style: decimal;
}

li > ul,
li > ol {
    margin-bottom: 0;
    margin-left: 1.5em;
}

dt {
    font-weight: bold;
}

dd {
    margin: 0 1.5em 1.5em;
}

img {
    height: auto; /* Make sure images are scaled correctly. */
    max-width: 100%; /* Adhere to container width. */
}

table {
    margin: 0 0 1.5em;
    width: 100%;
}

/*--------------------------------------------------------------
# Forms
--------------------------------------------------------------*/
button,
input[type="button"],
input[type="reset"],
input[type="submit"] {
    border: 1px solid;
    border-color: #FFF;
    border-radius: 0px;
    background: #9bbd1b;
    /* box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5), inset 0 15px 17px rgba(255, 255, 255, 0.5), inset 0 -5px 12px rgba(0, 0, 0, 0.05); */
    color: #FFF;
    font-size: 12px;
    font-size: 0.75rem;
    line-height: 1;
    padding: .6em 1em .4em;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.8);
}

button:hover,
input[type="button"]:hover,
input[type="reset"]:hover,
input[type="submit"]:hover {
    border-color: #ccc #bbb #aaa;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), inset 0 15px 17px rgba(255, 255, 255, 0.8), inset 0 -5px 12px rgba(0, 0, 0, 0.02);
}

button:focus,
input[type="button"]:focus,
input[type="reset"]:focus,
input[type="submit"]:focus,
button:active,
input[type="button"]:active,
input[type="reset"]:active,
input[type="submit"]:active {
    border-color: #aaa #bbb #bbb;
    box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.5), inset 0 2px 5px rgba(0, 0, 0, 0.15);
}

input[type="text"],
input[type="email"],
input[type="url"],
input[type="password"],
input[type="search"],
textarea {
    color: #666;
    border: 0px solid #FFF;
    border-radius: 0px;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="url"]:focus,
input[type="password"]:focus,
input[type="search"]:focus,
textarea:focus {
    color: #111;
}

input[type="text"],
input[type="email"],
input[type="url"],
input[type="password"],
input[type="search"] {
    padding: 3px;
}

textarea {
    padding-left: 3px;
    width: 100%;
}

/*--------------------------------------------------------------
# Navigation
--------------------------------------------------------------*/
/*--------------------------------------------------------------
## Links
--------------------------------------------------------------*/
a {
    color: #dbff98;
}
/*
a:visited {
    color: purple;
}
*/
a:hover,
a:focus,
a:active {
    color: #FFFFFF;
}

a:focus {
    outline: thin dotted;
}

a:hover,
a:active {
    outline: 0;
}

/*--------------------------------------------------------------
## Menus
--------------------------------------------------------------*/

.main-navigation {
    clear: both;
    display: block;
    float: left;
    width: 100%;
}

.main-navigation ul {
    display: none;
    list-style: none;
    margin: 0;
    padding-left: 0;
}

.main-navigation li {
    float: left;
    position: relative;
}

.main-navigation a {
    display: block;
    text-decoration: none;
}

.main-navigation ul ul {
    box-shadow: 0 3px 3px rgba(0, 0, 0, 0.2);
    float: left;
    position: absolute;
    top: 1.5em;
    left: -999em;
    z-index: 99999;
}

.main-navigation ul ul ul {
    left: -999em;
    top: 0;
}

.main-navigation ul ul a {
    width: 200px;
}

.main-navigation ul ul li {

}

.main-navigation li:hover > a,
.main-navigation li.focus > a {
}

.main-navigation ul ul :hover > a,
.main-navigation ul ul .focus > a {
}

.main-navigation ul ul a:hover,
.main-navigation ul ul a.focus {
}

.main-navigation ul li:hover > ul,
.main-navigation ul li.focus > ul {
    left: auto;
}

.main-navigation ul ul li:hover > ul,
.main-navigation ul ul li.focus > ul {
    left: 100%;
}

.main-navigation .current_page_item > a,
.main-navigation .current-menu-item > a,
.main-navigation .current_page_ancestor > a,
.main-navigation .current-menu-ancestor > a {
}


/* Small menu. */
.menu-toggle,
.main-navigation.toggled ul {
    display: block;
}

@media screen and (min-width: 37.5em) {
    .menu-toggle {
        display: none;
    }
    .main-navigation ul {
        display: block;
    }
}

.site-main .comment-navigation,
.site-main .posts-navigation,
.site-main .post-navigation {
    margin: 0 0 1.5em;
    overflow: hidden;
}

.comment-navigation .nav-previous,
.posts-navigation .nav-previous,
.post-navigation .nav-previous {
    float: left;
    width: 50%;
}

.comment-navigation .nav-next,
.posts-navigation .nav-next,
.post-navigation .nav-next {
    float: right;
    text-align: right;
    width: 50%;
}

/*--------------------------------------------------------------
# Accessibility
--------------------------------------------------------------*/
/* Text meant only for screen readers. */
.screen-reader-text {
    clip: rect(1px, 1px, 1px, 1px);
    position: absolute !important;
    height: 1px;
    width: 1px;
    overflow: hidden;
}

.screen-reader-text:focus {
    background-color: #f1f1f1;
    border-radius: 3px;
    box-shadow: 0 0 2px 2px rgba(0, 0, 0, 0.6);
    clip: auto !important;
    color: #21759b;
    display: block;
    font-size: 14px;
    font-size: 0.875rem;
    font-weight: bold;
    height: auto;
    left: 5px;
    line-height: normal;
    padding: 15px 23px 14px;
    text-decoration: none;
    top: 5px;
    width: auto;
    z-index: 100000; /* Above WP toolbar. */
}

/* Do not show the outline on the skip link target. */
#content[tabindex="-1"]:focus {
    outline: 0;
}

/*--------------------------------------------------------------
# Alignments
--------------------------------------------------------------*/
.alignleft {
    display: inline;
    float: left;
    margin-right: 1.5em;
}

.alignright {
    display: inline;
    float: right;
    margin-left: 1.5em;
}

.aligncenter {
    clear: both;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

/*--------------------------------------------------------------
# Clearings
--------------------------------------------------------------*/
.clear:before,
.clear:after,
.entry-content:before,
.entry-content:after,
.comment-content:before,
.comment-content:after,
.site-header:before,
.site-header:after,
.site-content:before,
.site-content:after,
.site-footer:before,
.site-footer:after {
    content: "";
    display: table;
    table-layout: fixed;
}

.clear:after,
.entry-content:after,
.comment-content:after,
.site-header:after,
.site-content:after,
.site-footer:after {
    clear: both;
}

/*--------------------------------------------------------------
# Widgets
--------------------------------------------------------------*/
.widget {
    margin: 0 0 1.5em;
}

/* Make sure select elements fit in widgets. */
.widget select {
    max-width: 100%;
}

/*--------------------------------------------------------------
# Content
--------------------------------------------------------------*/
/*--------------------------------------------------------------
## Posts and pages
--------------------------------------------------------------*/
.sticky {
    display: block;
}

.hentry {
    margin: 0 0 1.5em;
}

.byline,
.updated:not(.published) {
    display: none;
}

.single .byline,
.group-blog .byline {
    display: inline;
}

.page-content,
.entry-content,
.entry-summary {
    margin: 1.5em 0 0;
}

.page-links {
    clear: both;
    margin: 0 0 1.5em;
}

/*--------------------------------------------------------------
## Asides
--------------------------------------------------------------*/
.blog .format-aside .entry-title,
.archive .format-aside .entry-title {
    display: none;
}

/*--------------------------------------------------------------
## Comments
--------------------------------------------------------------*/
.comment-content a {
    word-wrap: break-word;
}

.bypostauthor {
    display: block;
}

/*--------------------------------------------------------------
# Infinite scroll
--------------------------------------------------------------*/
/* Globally hidden elements when Infinite Scroll is supported and in use. */
.infinite-scroll .posts-navigation, /* Older / Newer Posts Navigation (always hidden) */
.infinite-scroll.neverending .site-footer { /* Theme Footer (when set to scrolling) */
    display: none;
}

/* When Infinite Scroll has reached its end we need to re-display elements that were hidden (via .neverending) before. */
.infinity-end.neverending .site-footer {
    display: block;
}

/*--------------------------------------------------------------
# Media
--------------------------------------------------------------*/
.page-content .wp-smiley,
.entry-content .wp-smiley,
.comment-content .wp-smiley {
    border: none;
    margin-bottom: 0;
    margin-top: 0;
    padding: 0;
}

/* Make sure embeds and iframes fit their containers. */
embed,
iframe,
object {
    max-width: 100%;
}

/*--------------------------------------------------------------
## Captions
--------------------------------------------------------------*/
.wp-caption {
    margin-bottom: 1.5em;
    max-width: 100%;
}

.wp-caption img[class*="wp-image-"] {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.wp-caption .wp-caption-text {
    margin: 0.8075em 0;
}

.wp-caption-text {
    text-align: center;
}

/*--------------------------------------------------------------
## Galleries
--------------------------------------------------------------*/
.gallery {
    margin-bottom: 1.5em;
}

.gallery-item {
    display: inline-block;
    text-align: center;
    vertical-align: top;
    width: 100%;
}

.gallery-columns-2 .gallery-item {
    max-width: 50%;
}

.gallery-columns-3 .gallery-item {
    max-width: 33.33%;
}

.gallery-columns-4 .gallery-item {
    max-width: 25%;
}

.gallery-columns-5 .gallery-item {
    max-width: 20%;
}

.gallery-columns-6 .gallery-item {
    max-width: 16.66%;
}

.gallery-columns-7 .gallery-item {
    max-width: 14.28%;
}

.gallery-columns-8 .gallery-item {
    max-width: 12.5%;
}

.gallery-columns-9 .gallery-item {
    max-width: 11.11%;
}

.gallery-caption {
    display: block;
}
.site{ 
    border-top: 10px solid #9bbd1b;
}
.line{ 
    border-top: 5px solid #9bbd1b;
}

.site-header{
        background-color:#ffffde;
}
/* Small devices (tablets, 768px and up) */
@media (min-width: 768px) {
.nav>li{
     display: inline-block !important;
     padding: 0 0 0 34px;
     width: 160px;
}       
    .footerspace{
    margin-top:65px;
    }

}

.nav>li a{
    font-size: 13px;
    text-transform: uppercase;
    color:#484848;
    font-weight: bold;
    font-family: HelveticaRounded;

}
.nav > li > a:hover{

    background-color:#9bbd1b !important;
    color:#FFF;
}


.nav li ul{
    list-style-type: none;
}


.nav li li a{
    font-size: 13px;
    text-transform: uppercase;
    color:#FFF;
    font-weight: bold;
    font-family: HelveticaRounded;
    text-decoration:none;
    margin-left:-10px;
    width: 160px;
    padding: 10px 15px 10px;
    background-color:#9bbd1b !important;
}


    .search{
        height:50px;
        width:50px;
    }


@media screen and (min-width: 769px) {
    /*
    .navbar{
        margin-top: 15px;
    }
    */
    .search{
        margin-top: 100px; /* 10 pixel extra than navbar because in navbar there is a padding-top of 10 pixel on text. */
    }
    .donate{
        margin-top: 60px;
    }
    .space{
        margin: 50px 0;
    }
    .logo{
        margin-top: 13px;
    }

}
h3{
    font-size:19px;
}

.navbar{
    float:right;

}

.footerwidget{
    font-size:14px; color:#989898; margin-top:33px;
}

.footerheading h2{
    font-size: 18px;
    color: #FFF;
    text-transform: capitalize;
}

@media screen and (max-width: 769px) {


    .nav {
        margin-top:50px;
    }

    .footertext, .footertext a{
        text-align:center;

    }

}

.green{
    background-color:#8ab51e;
    margin: 0 auto; 
}
.green h3{
    color:#FFF;
}
.navbar{
        margin-top: -7px;
    margin-bottom: -12px;
}
.btn{
    background-color:#9bbd1b;
}
.white, .white a {
  color: #fff;
}
.btn-danger:hover{
        background-color: #000000;
}
.greenIcon, .greenIcon a {
  color: #9bbd1b;
}
.btn-white {
    background: #FFF;
    color: #ffffff;
}
.btn-white:hover {
    background: #FFF;
    color: #ffffff;
}

.input-group-btn:last-child>.btn, .input-group-btn:last-child>.btn-group{
    background-color: #9bbd1b !important;
    border: 1px solid #9bbd1b !important;
}

.primary-menu{
    font-family: HelveticaRounded;
}

#home-boxes{
    border: 1px solid #ddd;     border-style: solid;
    border-top: solid #8ab51e; height: 265px;
    color:#404040;
}
#home-boxes:hover{
    background-color:#8ab51e;
    color:#FFF;
}
#home-boxes:hover h3{
    background-color:#8ab51e;
    color:#FFF;
}
#
.donate_bg{
        background-image: url("http://www.inspuratesystems.com/clf/wp-content/uploads/2015/12/donate_image.png");
}
.donate_bg h3{
    font-size: 25px;
    font-family: HelveticaRounded;
}

.footertext, .footertext a{
        color:#989898;
        font-size:16px;
        margin-top:30px;
}
.navbar .nav>li>a:focus, .navbar .nav>li>a:hover{
    color:#FFFFFF;
}

.input-group .form-control, .input-group-addon, .input-group-btn{
    height: 31px;
}
#secondary{
        background-color: #FAFAFA;
}

.ubermenu-skin-grey-white .ubermenu-submenu, .ubermenu-skin-grey-white .ubermenu-submenu .ubermenu-target{
    color:#FFF !important;  
}
@media screen and (min-width: 769px) {
#main{
    margin-top:50px;
}

#main a{
    color:#9bbd1b;
}

#secondary a{
        color:#808080;
}

#secondary li{
    line-height: 20px;
    padding: 15px 50px;
    list-style-type: 009B;
    font-size: 18px;
}

#secondary li:before {
        content: "\00BB \0020";
         }

         #secondary ul  {
        list-style:none;
         }





.col-md-9.donate .col-md-3 > a {
    background: #D20059 none repeat scroll 0% 0%;
    font-family: HelveticaRounded;
    color: #fff;
    font-size: 16px;
    padding: 5px 20px;
    display: inline-block;
}

.col-md-9.donate .col-md-3 > a > img
{
    width: 20px;
}

@media only screen and (min-width:300px) and (max-width: 992px) {
.col-md-9.donate .col-md-3 > a {
    width: 100% !important;
    float: left;
    margin: 10px 0;
    border-radius: 5px;
    text-align: center;
    height:31px;
}
}

@media only screen and (max-width:992px){
    .inner-sidebar{
            display:none;
    }
}

.mobile{
        margin: 0;
}

html, body{
    overflow-x: hidden;
}
#flexslider-title{
    display:none;
}
#comment{
    border: 1px solid #174946;
}

Fiddle.

Answer 1

看看你浏览器的开发者工具。

假设我们正在查看相同的元素，左侧额外的 15px 是由于 bootstrap-combined.no-icons.min.css 的第 732 行上的这个原因：

@media (max-width: 767px) {
    .row, .thumbnails {
        margin-left: 0;
    }
}

这会重置左侧的负边距，但不会重置右侧的负边距。您可以通过在 .row 上将其设置回 -15px 来解决这个问题：

@media (max-width: 767px) {
    .row {
        margin-left: -15px;
    }
}

Answer 2

刚刚浏览了您的网站。它缝合了 Bootstrap css 文件，在 767px 之后使用 @media 查询向 Body 元素的左侧和右侧添加 20px 填充。

您需要做的就是在您自己的 css 文件中覆盖它。像这样：

@media screen and (max-width: 767px) {
  body {
    padding-left: 0px !important;
    padding-right: 0px !important;
  }
}

!important 扩展名会按照他们说的那样做。无论 css 层次结构是什么，它都会覆盖样式。我将这些放入是安全的，因为 Bootstrap 可能会在没有 !important 扩展的情况下覆盖您的自定义 css。试试上面没有 !important 扩展的代码，看看它是否也有效。