这是一款Bootstrap垂直手风琴折叠菜单。该Bootstrap垂直手风琴折叠菜单使用boostrap网格进行布局，并通过对bootstrap面板组进行美化，构建出精美的垂直手风琴折叠菜单效果。

使用方法

在页面中引jquery和bootstrap相关文件。

HTML结构

该Bootstrap垂直手风琴折叠菜单的基本HTML结构如下：

    

        

            

                

                    

                        

                            
                                Section 1
                            
                        
                    
                    

                        

                            
菜单内容1 
                        
                    
                

                

                    

                        

                            
                                Section 2
                            
                        
                    
                    

                        

                            
菜单内容2
                        
                    
                

                

                    

                        

                            
                                Section 3
                            
                        
                    
                    

                        

                            
菜单内容3
                        
                    
                
            
        
    

                

CSS样式

然后通过下面的CSS代码来对该Bootstrap垂直手风琴折叠菜单进行效果美化。

a:hover,a:focus{
    text-decoration: none;
    outline: none;
}
#accordion .panel{
    border: none;
    box-shadow: none;
    border-radius: 0;
    margin: 0 0 15px 10px;
}
#accordion .panel-heading{
    padding: 0;
    border-radius: 30px;
}
#accordion .panel-title a{
    display: block;
    padding: 12px 20px 12px 50px;
    background: #ebb710;
    font-size: 18px;
    font-weight: 600;
    color: #fff;
    border: 1px solid transparent;
    border-radius: 30px;
    position: relative;
    transition: all 0.3s ease 0s;
}
#accordion .panel-title a.collapsed{
    background: #fff;
    color: #0d345d;
    border: 1px solid #ddd;
}
#accordion .panel-title a:after,
#accordion .panel-title a.collapsed:after{
    content: "\f107";
    font-family: fontawesome;
    width: 55px;
    height: 55px;
    line-height: 55px;
    border-radius: 50%;
    background: #ebb710;
    font-size: 25px;
    color: #fff;
    text-align: center;
    border: 1px solid transparent;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.58);
    position: absolute;
    top: -5px;
    left: -20px;
    transition: all 0.3s ease 0s;
}
#accordion .panel-title a.collapsed:after{
    content: "\f105";
    background: #fff;
    color: #0d345d;
    border: 1px solid #ddd;
    box-shadow: none;
}
#accordion .panel-body{
    padding: 20px 25px 10px 9px;
    background: transparent;
    font-size: 14px;
    color: #8c8c8c;
    line-height: 25px;
    border-top: none;
    position: relative;
}
#accordion .panel-body p{
    padding-left: 25px;
    border-left: 1px dashed #8c8c8c;
}