Center Bootstrap Button

Question

I'm having trouble with centering Bootstrap button in panel. Margin right and left auto doesn't work. Is there a way to properly center the button? The Button needs to be centered because of the mobile scale.

Code:

<div class="n_monitor">
    <div class="panel panel-default">
        <div class="panel-body">
            <div class="btn-group">
                <button type="button" class="btn btn-default">Server 1</button>
                <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                    <span class="caret"></span>
                    <span class="sr-only">Toggle Dropdown</span>
                </button>
                <ul class="dropdown-menu">
                    <li><a href="#">Action</a></li>
                </ul>
            </div>
        </div>
    </div>
</div>

CSS:

.n_monitor .panel {
    width: 628px;
    border: solid 1px #ebebeb;
    border-top-left-radius: 0px;
    border-top-right-radius: 0px;
    border-bottom-left-radius: 3px;
    border-bottom-right-radius: 3px;
    height: 94px;
    box-shadow: none;
    margin: 0;
    background-color: #f4f4f4;
    margin-left: auto;
    margin-right: auto;
}

.n_monitor .btn {
    width: 126px;
    height: 54px;
    background-color: #3baed8;
    border: none;
    color: #fff;
    font-size: 14px;
    border-radius: 3px;
}

Answer 1

将Bootstrap的Alignment Class "use strict"; var gulp = require('gulp'), connect = require('gulp-connect'), open = require('gulp-open'), browserify = require('browserify'), reactify = require('reactify'), source = require('vinyl-source-stream'), eslint = require('gulp-eslint'), http = require('http'), concat = require('gulp-concat'); var config = { port: process.env.PORT || 1991, devBaseUrl: 'http://localhost', paths: { html: './src/*.html', js: './src/**/*.jsx', css: './public/stylesheets/**/*.css', dist: './dist', mainJs: './src/main.jsx' } }; //start a local dev server gulp.task('connect', function() { connect.server({ root: ['dist'], port: config.port, base: config.devBaseUrl, livereload: true }); }); gulp.task('open', ['connect'], function() { gulp.src('dist/index.html') .pipe(open({uri: config.devBaseUrl + ':' + config.port + '/'})); }); gulp.task('html', function() { gulp.src(config.paths.html) .pipe(gulp.dest(config.paths.dist)) .pipe(connect.reload()); }); gulp.task('js', function() { browserify(config.paths.mainJs) .transform(reactify) .bundle() .on('error', console.error.bind(console)) .pipe(source('bundle.js')) .pipe(gulp.dest(config.paths.dist + '/scripts')) .pipe(connect.reload()); }); gulp.task('css', function() { gulp.src(config.paths.css) .pipe(concat('bundle.css')) .pipe(gulp.dest(config.paths.dist + '/css')) .pipe(connect.reload()); }); gulp.task('lint', function() { return gulp.src(config.paths.js) .pipe(eslint({configFile: 'eslint.config.json'})) .pipe(eslint.format()); }); gulp.task('watch', function() { console.log('Files have been changed... Reloading...'); gulp.watch(config.paths.html, ['html']); gulp.watch(config.paths.css, ['css']); gulp.watch(config.paths.js, ['js']); }); gulp.task('default', ['html', 'js', 'css','lint', 'open', 'watch']); 添加到text-center。

.panel-body

@import url('https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css');

.n_monitor .panel {
  width: 100%;
  border: solid 1px #ebebeb;
  border-top-left-radius: 0px;
  border-top-right-radius: 0px;
  border-bottom-left-radius: 3px;
  border-bottom-right-radius: 3px;
  height: 94px;
  box-shadow: none;
  margin: 0;
  background-color: #f4f4f4;
  margin-left: auto;
  margin-right: auto;
}

.n_monitor .btn {
  width: 126px;
  height: 54px;
  background-color: #3baed8;
  border: none;
  color: #fff;
  font-size: 14px;
  border-radius: 3px;
}

Answer 2

您只需添加＆＃34; center-block＆＃34;类按钮。

e.g。

<button class = "center-block">Test</button>

Answer 3

这对我来说总是最好的。使用Bootstrap时的特殊性非常有效。

#button{
display: table; margin: 0 auto;
}

Answer 4

将文本居中于按钮的父级（.n_monitor .panel-body）

xxx123