CSS中Float / Position的难度

Question

我正在制作布局模板。我想要这个工作的方式是基本上有一个2列布局 - 第一列只是一个大约50px宽的红色条（用于菜单）。第二列应该填充画布的其余部分（我限制为950px），并且应该分为3个部分：页眉，页脚和内容区域。

在大多数情况下，我的布局有效，但我有几个问题。第一个是红色垂直条没有完全填满整个画布（我已经将其包装在id为“pgcontainer”的section标签中）。它不足约10px左右。

第二个问题是包含页眉，页脚和内容区域的第二个“列”没有浮动到红色垂直菜单栏的左侧 - 而是占据了画布的整个宽度。我尝试过使用明确的div。我试过改变位置并浮动。似乎没什么用。

我在这里发布了代码：http://jsfiddle.net/5r7xt7rd/。任何帮助将不胜感激。

HTML：

<section id="pgcontainer">
  <section id="navbar-container">
      <div id="navbar">
        <a href="#" class="menubtn">menu</a>
        <section id="navbar-icons">
            <a href="#"><img src="../images/icons/home.png" alt="home" /></a>
            <a href="#"><img src="../images/icons/facebook.png" alt="home" /></a>
            <a href="#"><img src="../images/icons/twitter.png" alt="home" /></a>
            <a href="#"><img src="../images/icons/mail.png" alt="home" /></a>
        </section>
        <!-- use captain icon for toggle menu -->
        <div id="hamburgermenu">
            <div class="search-container">
              <div class="searchbox-container">
                <input placeholder="search" type="text"></input>
                <a class="button">
                    <img src="../images/icons/search.png" />
                </a>
              </div>
            </div>

          <ul>
              <li><a href="#">Home</a></li>
              <li>
                  <a href="#">Explore</a>
                  <ul class="sub-menu">
                      <li><a href="#">Search</a></li>
                      <li><a href="#">Visualising the Letters</a></li>
                  </ul>
              </li>
              <li><a href="#">Learn</a></li>
              <li><a href="#">Collaborate</a></li>
              <li><a href="#">About</a></li>
          </ul>
        </div>
      </div>
    <div class="overlay">
    </div>
  </section>

  <div class="clear" />

  <section id="content">
    <section id="logo">
            <a href="#">
                <img src="../images/banner-072014-v1.png" />
            </a>
        </section>
    <section id="form-content">
      <h1>
        This is for content
      </h1>
    </section>
    <section id="footer">

      <section id="sponsor">
        <img class="sponsor" src="../images/logos/white/mu.png" />
        <img class="sponsor" src="../images/logos/white/aff.png" />
        <img class="sponsor" src="../images/logos/white/tcd.png" />
        <img class="sponsor" src="../images/logos/white/djei.png" />
        <img class="sponsor" src="../images/logos/white/dri.png" />
      </section>
      <section id="footer-text">
        Copyright © 2015 Letters of 1916
      </section>
    </section>
  </section>
</section>

CSS：

@import url('http://fonts.googleapis.com/css?family=Montserrat:400,700');

    @import url('http://fonts.googleapis.com/css?family=Montserrat:400,700');

* {
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    font-family: "Cabin";
}

html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, menu, nav, output, ruby, section, summary, time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
    outline: none;
    -webkit-font-smoothing: antialiased;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

html {
    overflow-y: scroll;
}

body {
    width: 100%;
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: #d6d1c7;
    font-size: 62.5%;
    line-height: 1;
}

br {
    display: block;
    line-height: 1.6em;
}

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

ol, ul {
    list-style: none;
}

input, textarea {
    -webkit-font-smoothing: antialiased;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    outline: none;
}

blockquote, q {
    quotes: none;
}

blockquote:before, blockquote:after, q:before, q:after {
    content: '';
    content: none;
}

strong, b {
    font-weight: bold;
}

em, i {
    font-style: italic;
}

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

img {
    border: 0;
    max-width: 100%;
}

h1 {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 3.6em;
    line-height: 1.3em;
    font-weight: 700;
    color: #484848;
    text-align: center;
    letter-spacing: -0.05em;
    margin-bottom: 15px;
}

p {
    font-size: 1.7em;
    line-height: 1.5em;
    margin-bottom: 20px;
    color: #616161;
}

#pgcontainer {
    max-width: 950px;
    padding: 25px 0;
    margin: 0 auto;
}

/*===Menu====*/

#navbar-container {
    display: block;
    max-width: 50px;
    height: 100%;
    background: #7a2126;
    padding: 5px 10px;
    margin-right: 15px;
    -webkit-border-radius: 8px;
    -moz-border-radius: 8px;
    border-radius: 8px;
    position: absolute;
}

#navbar {
    padding-top: 10px;
    background: #7a2126;
    padding-left: 10px;
    margin-left: -10px;
    width: 50px;
    float: left;
}

#navbar-icons {
    margin-top: 100px;   
}

#navbar-icons a img {
    max-width: 50px;
    max-height: 50px;
    margin: 10px 0px 10px -10px;
}

.menubtn {
    /* needs positioning for z-index http://stackoverflow.com/a/10600930/477958 */
    position: relative;
    z-index: 101;
    color: #274a61;
    text-decoration: none;
    font-size: 0em;
    line-height: 0em;
    top: -2px;
    padding: 15px;
    background-image: url('../../images/white-menu-button.png');
    background-position: 50% 50%;
    background-size: 25px 25px;
    background-repeat: no-repeat;
    float: left;
}

.menubtn:hover, .openmenu .menubtn {
    color: #bdd43e;
    background-image: url('../../images/white-menu-button.png');
}

    /** toggle menu **/
body.openmenu {
    position: fixed;
    overflow: hidden;
}



.overlay {
    position: fixed;
    z-index: 99;
    background-color: rgba(0,0,0,0.5);
    bottom: 0;
    right: 0;
    left: 0;
}

.openmenu .overlay {
    top: 0;
}

#hamburgermenu {
    height: 100%;
    width: 0;
    background: #7a2126;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 101;
    overflow: hidden;
    -webkit-box-shadow: 3px 0 7px rgba(0,0,0,0.55);
    -moz-box-shadow: 3px 0 7px rgba(0,0,0,0.55);
    box-shadow: 3px 0 7px rgba(0,0,0,0.55);
}

#hamburgermenu ul {
    margin-top: 45px;
    z-index: 101;
    overflow-y: auto;
    overflow-x: hidden;
}

#hamburgermenu ul li {
    display: block;
}

#hamburgermenu ul li a,
#hamburgermenu ul li h1{
    display: block;
    min-width: 130px;
    padding: 18px 15px;
    color: #ffffff;
    font-size: 1.75em;
    font-weight: bold;
    text-decoration: none;
    cursor: pointer;
}

.sub-menu li a:hover,
#hamburgermenu li a:hover{
    color: #000000;
    background: #DEBFC1;
}

#hamburgermenu ul.sub-menu li a {
    display: block;
    min-width: 130px;
    padding: 5px 15px;
    color: #ffffff;
    font-size: 1.35em;
    font-weight: normal;
    text-decoration: none;
    margin-top: -5px;
    z-index: 102;
}

.header-logo {
    height: 52px;
    margin-top: -15px;
    float: left;
    display: block;
}

#header-text {
    color: #ffffff; 
    margin-top: -10px;
    margin-left: auto;
    margin-right: auto;
    display: block;
}

/*===Search====*/
.search-container {
    margin-top: 5px;
    display: block;
    width: 23em;
}

.searchbox-container {
    overflow: hidden;
    float: right;
    height: 4em;
    width: 4em;
    border-radius: 2em;
    box-shadow: 0 0 5px #ffffff;
    -moz-transition: all 0.35s;
    -webkit-transition: all 0.35s;
}

.searchbox-container:hover {
    width: 22em;
    border-radius: 5px 2em 2em 5px;
}

.searchbox-container:hover input {
    display: inline-block;
    width: 19em;
    padding: 10px;
}

input {
    -moz-appearance: none;
    -webkit-appearance: none;
    appearance: none;
    float: left;
    width: 0em;
    height: 2em;
    margin: 1em;
    margin-right: -4.5em;
    background: white;
    color: #6a5d4f;
    font-size: 1em;
    font-weight: 600;
    padding: 0px;
    border: 0;
    border-radius: 5px;
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.2) inset;
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.15);
    -moz-transition: all 0.25s;
    -webkit-transition: all 0.25s;
}

input:focus {
    outline: none;
    box-shadow: 0 -1px 1px rgba(255, 255, 255, 0.25), 0 1px 5px rgba(0, 0, 0, 0.15);
}

.button {
    float: right;
    width: 1.75em;
    height: 1.75em;
    margin: 0.125em;
    background: #7a2126;
    text-align: center;
    font-size: 2em;
    color: #fdf6e3;
    border-radius: 50%;
    box-shadow: 0 -1px 1px rgba(255, 255, 255, 0.25), 0 1px 1px rgba(0, 0, 0, 0.25);
    text-shadow: 0 -2px 1px rgba(0, 0, 0, 0.3);
}

.button i {
    margin-top: 0.3em;
}

.button img {
    margin: 0.3em;
    width: 25px;
    height: 20px;
}

.button:active {
    border: 0 !important;
    text-shadow: 0 0 0;
}
/*===Content Form====*/

.clear {
    clear: both;   
}

#content {
    width: 100%;
    background: #fff;
    -webkit-border-radius: 8px;
    -moz-border-radius: 8px;
    border-radius: 8px;
}

#form-content {
    width: 100%;
    float: left;
    background-color: #ffffff;
    min-height: 550px;
}

#logo {
    width: 100%;
}

#logo img {
    -webkit-border-radius: 8px 8px 0px 0px;
    -moz-border-radius: 8px 8px 0px 0px;
    border-radius: 8px 8px 0px 0px;
}

/*===Footer====*/
#footer {
    background-color: #998b77;
    color: #ffffff;
    clear: both;
    -webkit-border-radius: 0px 0px 8px 8px;
    -moz-border-radius: 0px 0px 8px 8px;
    border-radius: 0px 0px 8px 8px;
    min-height: 100px;
}

#sponsor {
    display: block;
    margin: 0px auto;
    padding-top: 10px;
    align-content: center;
}

#sponsor img {
    display: inline !important;
    max-width: 17%;
    padding: 5px 15px 5px 15px;
}

#footer-text {
    text-align: center;
    margin-top: 20px;
    padding-bottom: 20px;
}

Answer 1

为了达到所需的布局，您需要的绝对最小值将低于css更改

#pgcontainer {
    ...

    position: relative;
}

#navbar-container {
    ...

    /*height: 100%;*/
    top: 25px;
    bottom: 25px;
}

#content {  
    ...

    /*width: 100%;*/
    position: relative;
    margin-left: 50px;
}

通常，尽量不要使用ID，因为它们具有higher specificity

修改

不确定jquery can animate to 'auto'是否因为它不是数字

您必须从margin: 0 auto

中删除#pgcontainer

将$container.animate({marginLeft: 'auto', marginRight: 'auto'})替换为$container.animate({marginLeft: 0, marginRight: 0})

更新了小提琴：http://jsfiddle.net/Varinder/5r7xt7rd/2/