javascript - 选择框在 Firefox 中被压扁和拉长

Question

这是 jsfiddle对于其余代码，但我在下面附上了我的样式 CSS

在 Chrome 中它们看起来像这样

在 Internet Explorer 中它们看起来像这样

在 Firefox 中它们看起来像这样

不确定问题是什么以及如何解决

这是我的样式 CSS

html {
    height: 100%;
}
* {
    margin: 0;
    padding: 5;
}
body {
    font: normal .80em'trebuchet ms', arial, sans-serif;
    background: #F5F5EE;
    color: #555;
}
p {
    padding: 0 0 20px 0;
    line-height: 1.7em;
}
img {
    border: 0;
}
h1, h2, h3, h4, h5, h6 {
    color: #362C20;
    letter-spacing: 0em;
    padding: 0 0 5px 0;
}
h1, h2, h3 {
    font: normal 170%'century gothic', arial;
    margin: 0 0 15px 0;
    padding: 15px 0 5px 0;
    color: #000;
}
h2 {
    font-size: 160%;
    padding: 9px 0 5px 0;
    color: #009FBC;
}
h3 {
    font-size: 140%;
    padding: 5px 0 0 0;
}
h4, h6 {
    color: #009FBC;
    padding: 0 0 5px 0;
    font: normal 110% arial;
    text-transform: uppercase;
}
h5, h6 {
    color: #888;
    font: normal 95% arial;
    letter-spacing: normal;
    padding: 0 0 15px 0;
}
a, a:hover {
    outline: none;
    text-decoration: underline;
    color: #AEB002;
}
a:hover {
    text-decoration: none;
}
blockquote {
    margin: 20px 0;
    padding: 10px 20px 0 20px;
    border: 1px solid #E5E5DB;
    background: #FFF;
}
ul {
    margin: 2px 0 22px 17px;
}
ul li {
    list-style-type: circle;
    margin: 0 0 6px 0;
    padding: 0 0 4px 5px;
    line-height: 1.5em;
}
ol {
    margin: 8px 0 22px 20px;
}
ol li {
    margin: 0 0 11px 0;
}
.left {
    float: left;
    width: auto;
    margin-right: 10px;
}
.right {
    float: right;
    width: auto;
    margin-left: 10px;
}
.center {
    display: block;
    text-align: center;
    margin: 20px auto;
}
#main, #logo, #menubar, #site_content, #footer {
    margin-left: auto;
    margin-right: auto;
}
#header {
    background: #323534 url(back.png) repeat-x;
    height: 177px;
}
#logo {
    width: 880px;
    position: relative;
    height: 140px;
    background: transparent;
}
#logo #logo_text {
    position: absolute;
    top: 10px;
    left: 0;
}
#logo h1, #logo h2 {
    font: normal 300%'century gothic', arial, sans-serif;
    border-bottom: 0;
    text-transform: none;
    margin: 0 0 0 9px;
}
#logo_text h1, #logo_text h1 a, #logo_text h1 a:hover {
    padding: 22px 0 0 0;
    color: #FFF;
    letter-spacing: 0.1em;
    text-decoration: none;
}
#logo_text h1 a .logo_colour {
    color: #E4EC04;
}
#logo_text a:hover .logo_colour {
    color: #FFF;
}
#logo_text h2 {
    font-size: 120%;
    padding: 4px 0 0 0;
    color: #999;
}
#menubar {
    width: 880px;
    height: 46px;
}
ul#menu {
    float: right;
    margin: 0;
}
ul#menu li {
    float: left;
    padding: 0 0 0 9px;
    list-style: none;
    margin: 1px 2px 0 0;
    background: #5A5A5A url(tab.png) no-repeat 0 0;
}
ul#menu li a {
    font: normal 100%'trebuchet ms', sans-serif;
    display: block;
    float: left;
    height: 20px;
    padding: 6px 35px 5px 28px;
    text-align: center;
    color: #FFF;
    text-decoration: none;
    background: #5A5A5A url(tab.png) no-repeat 100% 0;
}
ul#menu li.selected a {
    height: 20px;
    padding: 6px 35px 5px 28px;
}
ul#menu li.selected {
    margin: 1px 2px 0 0;
    background: #00C6F0 url(tab_selected.png) no-repeat 0 0;
}
ul#menu li.selected a, ul#menu li.selected a:hover {
    background: #00C6F0 url(tab_selected.png) no-repeat 100% 0;
    color: #FFF;
}
ul#menu li a:hover {
    color: #E4EC04;
}
#site_content {
    width: 880px;
    overflow: hidden;
    margin: 20px auto 0 auto;
    padding: 0 0 10px 0;
}
#sidebar_container {
    float: right;
    width: 224px;
}
.sidebar_top {
    width: 222px;
    height: 14px;
    background: transparent url(side_top.png) no-repeat;
}
.sidebar_base {
    width: 222px;
    height: 14px;
    background: url(side_base.png) no-repeat;
}
.sidebar {
    float: right;
    width: 222px;
    padding: 0;
    margin: 0 0 16px 0;
}
.sidebar_item {
    background: url(side_back.png) repeat-y;
    padding: 0 15px;
    width: 192px;
}
.sidebar li a.selected {
    color: #444;
}
.sidebar ul {
    margin: 0;
}
#content {
    text-align: left;
    width: 620px;
    padding: 0 0 0 5px;
    float: left;
}
#content ul {
    margin: 2px 0 22px 0px;
}
#content ul li, .sidebar ul li {
    list-style-type: none;
    background: url(bullet.png) no-repeat;
    margin: 0 0 0 0;
    padding: 0 0 4px 25px;
    line-height: 1.5em;
}
#footer {
    width: 100%;
    font-family:'trebuchet ms', sans-serif;
    font-size: 100%;
    height: 80px;
    padding: 28px 0 5px 0;
    text-align: center;
    background: #3B3939 url(footer.png) repeat-x;
    color: #A8AA94;
}
#footer p {
    line-height: 1.7em;
    padding: 0 0 10px 0;
}
#footer a {
    color: #A8AA94;
    text-decoration: none;
}
#footer a:hover {
    color: #FFF;
    text-decoration: none;
}
.search {
    color: #5D5D5D;
    border: 1px solid #BBB;
    width: 134px;
    padding: 4px;
    font: 100% arial, sans-serif;
}
.form_settings {
    margin: 15px 0 0 0;
}
.form_settings p {
    padding: 0 0 4px 0;
}
.form_settings span {
    float: left;
    width: 200px;
    text-align: left;
}
.form_settings input {
    padding: 5px;
    width: 225px;
    font: 100% arial;
    border: 1px solid #E5E5DB;
    background: #FFF;
    color: #47433F;
}
.form_settings .submit:hover {
    background: #00CAEE;
    color: #E4EC04;
}
.form_settings .submit {
    font: 100% arial;
    border: 0;
    width: 99px;
    margin: 0 0 0 212px;
    height: 33px;
    padding: 2px 0 3px 0;
    cursor: pointer;
    background: #3B3B3B;
    color: #FFF;
    -o-transition:color .2s ease-out, background .5s ease-in;
    -ms-transition:color .2s ease-out, background .5s ease-in;
    -moz-transition:color .2s ease-out, background .5s ease-in;
    -webkit-transition:color .2s ease-out, background .5s ease-in;
    /* ...and now for the proper property */
    transition:color .2s ease-out, background .5s ease-in;
}
.important-btn:hover {
    background: #8C1717;
}
.important-btn {
    font: 100% arial;
    border: 0;
    width: 200px;
    margin: 5px 0px 5px 215px;
    height: 25px;
    padding: 2px 0 3px 0;
    cursor: pointer;
    background: #52514F;
    color: #FFF;
    -o-transition:color .2s ease-out, background .5s ease-in;
    -ms-transition:color .2s ease-out, background .5s ease-in;
    -moz-transition:color .2s ease-out, background .5s ease-in;
    -webkit-transition:color .2s ease-out, background .5s ease-in;
    /* ...and now for the proper property */
    transition:color .2s ease-out, background .5s ease-in;
}
.regularbutton:hover {
    background: #00CAEE;
    color: #E4EC04;
}
.regularbutton {
    font: 100% arial;
    border: 0;
    width: 200px;
    margin: 0px 0px 0px 212px;
    height: 25px;
    padding: 2px 0 3px 0;
    cursor: pointer;
    background: #52514F;
    color: #FFF;
    -o-transition:color .2s ease-out, background .5s ease-in;
    -ms-transition:color .2s ease-out, background .5s ease-in;
    -moz-transition:color .2s ease-out, background .5s ease-in;
    -webkit-transition:color .2s ease-out, background .5s ease-in;
    /* ...and now for the proper property */
    transition:color .2s ease-out, background .5s ease-in;
}
.whattoput:hover {
    background: #00CAEE;
    color: #E4EC04;
}
.whattoput {
    font: 100% arial;
    border: 0;
    width: 100px;
    margin: 0px 0px 0px 5px;
    height: 25px;
    padding: 0px 0 0px 0px;
    cursor: pointer;
    background: #52514F;
    color: #FFF;
    -o-transition:color .2s ease-out, background .5s ease-in;
    -ms-transition:color .2s ease-out, background .5s ease-in;
    -moz-transition:color .2s ease-out, background .5s ease-in;
    -webkit-transition:color .2s ease-out, background .5s ease-in;
    /* ...and now for the proper property */
    transition:color .2s ease-out, background .5s ease-in;
}
.form_settings option {
    font: 100% arial;
    border: 0;
    width: 10px;
    margin: 5px 0 0 212px;
    height: 33px;
    padding: 2px 0 3px 0;
    cursor: pointer;
    background: #52514F;
    color: #FFF;
}
.form_settings select {
    font: 100% arial;
    margin: 0px 0px 0px 5px;
    width: 140px;
}
.form_settings textarea {
    font: 100% arial;
    width: 225px;
}
.form_settings .checkbox {
    margin: 4px 0;
    padding: 0;
    width: 14px;
    border: 0;
    background: none;
}
.separator {
    width: 100%;
    height: 0;
    border-top: 1px solid #D9D5CF;
    border-bottom: 1px solid #FFF;
    margin: 0 0 20px 0;
}
table {
    margin: 10px 0 30px 0;
}
table tr th, table tr td {
    background: #3B3B3B;
    color: #FFF;
    padding: 7px 4px;
    text-align: left;
}
table tr td {
    background: #E5E5DB;
    color: #47433F;
    border-top: 1px solid #FFF;
}
.hideother {
    display: none;
}
#banner {
    width: 100%;
    background: orange;
    height: 25px;
    position: fixed;
    top: 0;
    display: none;
    left: 0;
    text-align: center;
    line-height: 25px;
    font-weight: bold;
    color:#4F0002;
}

Answer 1

.form_settings option {
    ...
    width: 10px;
    ...
}

是你的罪魁祸首。

Chrome 和 IE 不支持大多数 option 样式(dag blast them)，所以它按照浏览器的意图呈现，但是 Firefox(看起来)让你把它搞砸了想。你肯定把 width: 10px; 搞砸了。我只是建议丢失所有的 option 样式，但这只是我的意见。