如何使用css最大化列表以消耗最大空间

Question

这是一个用于菜单目的的列表我想最大化右侧的空间以匹配左侧的空间但是当我增加填充或边距时最后一个菜单下降我应该这样做以匹配左侧的菜单这是我的代码

css:

    #headermenu {
    /*outline: 1px solid red;*/
}
#headermenu ul {

}
#headermenu ul ul {
    display: none;
}

    #headermenu ul li:hover > ul {
        display:inline-block;
    }
#headermenu ul {
    background: #f69b58; 
    /*background: linear-gradient(top, #efefef 0%, #bbbbbb 100%);  
    background: -moz-linear-gradient(top, #efefef 0%, #bbbbbb 100%); 
    background: -webkit-linear-gradient(top, #efefef 0%,#bbbbbb 100%); 
    box-shadow: 0px 0px 9px rgba(0,0,0,0.15);*/
    padding: 0 20.05px;
    list-style: none;
    position: relative;
    display: inline-block;
}
    #headermenu ul:after {
        content: ""; 
        clear: both; 
        display: block;
    }   

    #headermenu ul li {
        float: left;
    }
    #headermenu ul li:hover {
        background: #3eaee9;
        /*background: linear-gradient(top, #4f5964 0%, #5f6975 40%);
        background: -moz-linear-gradient(top, #4f5964 0%, #5f6975 40%);
        background: -webkit-linear-gradient(top, #4f5964 0%,#5f6975 40%);*/
    }
        #headermenu ul li:hover a {
            color: #fff;
        }

    #headermenu ul li a {
        display: block; 
        padding: 15px 63.9px;
        color: #552f01; 
        text-decoration: none;
    }   
#headermenu ul ul {
    background: #f69b58; 
    border-radius: 0px; 
    padding: 0;
    position: absolute; 
    top: 100%;
}
    #headermenu ul ul li {
        float: none; 
        /*border-top: 1px solid #6b727c;
        border-bottom: 1px solid #575f6a;*/
        position: relative;
    }
        #headermenu ul ul li a {
            padding: 15px 63.9px;
            color: #fff;
        }   
            #headermenu ul ul li a:hover {
                background: #3eaee9;
            }   
    #headermenu ul ul ul {
        position: absolute; 
        left: 100%; 
        top:0;
    }

列表：

<ul id="menu">
                        <li><a href="#">Home</a></li>
                        <li><a href="#">Town Office</a>
                            <ul class="submenu">
                                <li><a href="#">Sub Menu 1</a></li>
                                <li><a href="#">Sub Menu 2</a></li>
                                <li><a href="#">Sub Menu 3</a>
                                    <ul class="submenu">
                                        <li><a href="#">SubMenu1</a></li>
                                        <li><a href="#">SubMenu2</a></li>
                                        <li><a href="#">SubMenu3</a></li>
                                        <li><a href="#">SubMenu4</a></li>
                                    </ul>
                                </li>
                                <li><a href="#">Sub Menu 4</a></li>
                            </ul>
                        </li>
                        <li ><a href="#">Business</a>
                            <ul class="submenu">
                                <li><a href="#">Sub Menu 1</a></li>
                                <li><a href="#">Sub Menu 2</a></li>
                                <li><a href="#">Sub Menu 3</a></li>
                                <li><a href="#">Sub Menu 4</a></li>
                            </ul>
                        </li>
                        <li ><a href="#">Residents</a>
                            <ul class="submenu">
                                <li><a href="#">Sub Menu 1</a></li>
                                <li><a href="#">Sub Menu 2</a></li>
                                <li><a href="#">Sub Menu 3</a></li>
                                <li><a href="#">Sub Menu 4</a></li>
                            </ul>
                        </li>
                        <li ><a href="#">Tourists</a>
                            <ul class="submenu">
                                <li><a href="#">Sub Menu 1</a></li>
                                <li><a href="#">Sub Menu 2</a></li>
                                <li><a href="#">Sub Menu 3</a></li>
                                <li><a href="#">Sub Menu 4</a></li>
                            </ul>
                        </li>
                    </ul>

使用这种方法... 任何帮助表示赞赏... 是什么导致图像中黑色圆圈中的多余空间

Answer 1

最简单的方法之一是使用表格单元布局...不，不是实际的表格，而是...

JSfiddle

CSS

#menu ul {
    padding: 0 3px;
    display: table;     /* add this */
    width:100%;     /* add this */
}
#menu-list li {
    height: 45px;
    //width: 180px;     /* remove this */
    list-style: none;
    background-color: #f69b58;
    //float: left;     /* remove this */
    display:table-cell; /* add this */ 
    text-align: center;
    font-family: arial;
    font-size: 14px;
    margin-right: 2px;
}
#menu-list li a {
    display: block;
    padding: 13px;
    color: #ffffff;
    text-decoration: none;
}
}
#menu-list li:active {
    color:black;
    background-color: #3EAEE9;
}
#menu-list li:hover {
    background:#3eaee9;
}
#menu-list li.current {
    background-image: -webkit-linear-gradient(top, rgb(7, 80, 158), rgb(6, 101, 243));
    background-color: #3EAEE9;
}

Answer 2

您应该更改 #menu-list li {display: inline-block;} #menu ul {text-align: center;}，删除 float: left 和更改width 的li

See Fiddle

但我建议使用display:table、display: table-cell 属性；

See Fiddle