无法使菜单正常运行

Question

我似乎无法正确执行菜单并使其响应。我在24英寸显示器上进行了原始布局，目前正在使用17英寸笔记本电脑。

https://i.stack.imgur.com/2EDtH.jpg

@font-face {
    font-family: 'bebasregular';
    src: url('fonts/bebas/bebas-regular-webfont.woff2') format('woff2'),
    url('fonts/bebas/bebas-regular-webfont.woff') format('woff');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: 'open_sansbold';
    src: url('fonts/opensans/opensans-bold-webfont.woff2') format('woff2'),
    url('fonts/opensans/opensans-bold-webfont.woff') format('woff');
    font-weight: normal;
    font-style: normal;

}

@font-face {
    font-family: 'ubuntubold';
    src: url('fonts/ubuntu/ubuntu-b-webfont.woff2') format('woff2'),
    url('fonts/ubuntu/ubuntu-b-webfont.woff') format('woff');
    font-weight: normal;
    font-style: normal;

}

@font-face {
    font-family: 'ubuntulight';
    src: url('fonts/ubuntu/ubuntu-l-webfont.woff2') format('woff2'),
    url('fonts/ubuntu/ubuntu-l-webfont.woff') format('woff');
    font-weight: normal;
    font-style: normal;

}

@font-face {
    font-family: 'ubunturegular';
    src: url('fonts/ubuntu/ubuntu-r-webfont.woff2') format('woff2'),
    url('fonts/ubuntu/ubuntu-r-webfont.woff') format('woff');
    font-weight: normal;
    font-style: normal;

}

@font-face {
    font-family: 'open_sansregular';
    src: url('fonts/opensans/opensans-regular-webfont.woff2') format('woff2'),
    url('fonts/opensans/opensans-regular-webfont.woff') format('woff');
    font-weight: normal;
    font-style: normal;

}

@font-face {
    font-family: 'myriadpro_regular';
    font-style: normal;
    font-weight: normal;
    src: local('Myriad Pro Regular'), url('fonts/myriad/MYRIADPRO-REGULAR.woff') format('woff');
}

.window-size
{
    width: 1600px;
    height: 756px;
    background-color: white;
    margin: 0px;
}

div.top-header
{
    background-color: #ff6200;
    width: 100%;
    overflow: auto;
    line-height: 10px;
}

.left-header1{
    font-size: 23px;
    color: #be3600;
    font-family: bebasregular;
    font-weight: 200;
    float: left;
    padding-left: 320px;
}

.left-header2{
    font-size: 23px;
    color: white;
    font-family: bebasregular;
    font-weight: 200;
    text-align: left;
    padding-left: 10px;
}

.right-header1{
    font-size: 23px;
    color: #be3600;
    font-family: bebasregular;
    font-weight: 200;
    text-align: right;
    padding-right: 320px;
}

.right-header2{
    font-size: 23px;
    color: white;
    font-family: bebasregular;
    font-weight: 200;
    text-align: right;
    padding-left: 10px;
}

.breadcrumbs{
    width: 100%;
    padding-top: 48px;
    padding-bottom: 48px;
    font-family: ubuntubold;
    font-size: 14px;
}

.breadcrumbs-plain{
    color: #adadad;
    padding-left: 320px;
    font-family: ubunturegular;
    font-size: 14px;
    margin-bottom: 40px;
}

.contact-title{
    font-family: open_sansbold;
    font-size: 26px;
    color: #ff6200;
    padding-left: 320px;
    margin-bottom: 0px;
}

.lorem{
    font-family: ubuntulight;
    font-size: 14px;
    color: #878787;
    padding-left: 320px;
    padding-right: 320px;
    margin-top: 5px;

}

.split-left{
    width: 475px;
    position: fixed;
    z-index: 1;
    overflow-x: hidden;
    left: 0;
    padding-left: 320px;
}

.split-right{
    width: 470px;
    position: fixed;
    z-index: 1;
    overflow-x: hidden;
    right: 0;
    padding-right: 560px;
}

.split-title{
    color: #ff6200;
    font-family: open_sansregular;
    font-weight: 200;
    font-size: 24px;
    margin-bottom: 0px;
    margin-top: 0px;
}

.contact-rule{
    width: 470px;
    display: block;
    height: 1px;
    border: 20px;
    border-top: 6px solid #525252;
    margin: 10px 0;
    padding: 0;
}

.reach-rule{
    width: 400px;
    display: block;
    height: 1px;
    border: 20px;
    border-top: 6px solid #525252;
    margin: 10px 0;
    padding: 0;
}

.fullname-textbox{
    width: 470px;
    height: 30px;
    background-color: #f6f6f6;
    margin-top: 10px;
    padding: 0px;
    border: 1px;
    border-color: #ededed;
    text-indent: 10px;
    font-family: ubuntulight;
    font-size: 14px;
}

.half-textbox-email{
    width: 228px;
    height: 30px;
    background-color: #f6f6f6;
    margin-top: 10px;
    margin-bottom: 10px;
    border: 1px;
    border-color: #ededed;
    text-indent: 10px;
    margin-left: 6px;
    font-family: ubuntulight;
    font-size: 14px;
}

.half-textbox-phone{
    width: 228px;
    height: 30px;
    background-color: #f6f6f6;
    margin-top: 10px;
    margin-bottom: 10px;
    border: 1px;
    border-color: #ededed;
    text-indent: 10px;
    font-family: ubuntulight;
    font-size: 14px;
}

.message{
    width: 469px;
    height: 110px;
    background-color: #f6f6f6;
    padding: 0px;
    border: 1px;
    border-color: #ededed;
    text-indent: 10px;
    padding-top: 10px;
    font-family: ubuntulight;
    font-size: 14px;
}

.submit{
    margin-top: 20px;
    background-color: #ff6200;
    width: 100px;
    height: 36px;
    border: 0px;
    font-family: open_sansbold;
    color: #ffffff;
    font-size: 14px;
}

.coalition{
    font-family: myriadpro_regular;
    font-weight: lighter;
    font-size: 14px;
    color: #595959;
}

.social-media
{
    margin-top: 40px;
}

.fa{
    padding: 10px;
    font-size: 10px; !important;
    width: 20px;
    height: 20px;
    text-align: center;
    text-decoration: none;
    margin: 5px 2px;
}

.fa:hover{
    background-color: #595959;
}

.fa-facebook{
    background: #d0d0d0;
    color: white;
}

.fa-twitter{
    background: #d0d0d0;
    color: white;
}

.fa-pinterest{
    background: #d0d0d0;
    color: white;
}

.fa-linkedin{
    background: #d0d0d0;
    color: white;
}

h2.logo{
    font-size: 53px;
    color: black;
    font-family: bebasregular;
    font-weight: bold;
    text-align: left;
    padding-left: 320px;
    margin: 0 0 0 0;
}

.logo2{
    font-size: 53px;
    color: #ff6200;
    font-family: bebasregular;
    font-weight: bold;
    text-align: left;
}

.nav-menu {
    background-color: #f9f9f9;
    width: 100%;
    padding-top: 34px;
    padding-bottom: 34px;
    color: #333333;
    top: 0px;
}

.navbar{
    margin-right: 320px;
    position: absolute;
    top: 90px;
    left: 850px;
}

ul{
    list-style: none;
    padding: 0;
    margin: 0;
    border: 0;
}

ul li{
    float: right;
    width: 50px;
    height: 40px;
    margin-left: 10px;
    line-height: 40px;
    text-align: center;
    font-size: 14px;
    text-decoration: none;
    display: block;
    font-weight: 200;
    font-family: myriadpro_regular;
}
ul li:hover ul li{
    display: block;
    border: 0px;
    font-family: open_sansbold;
}

ul li:hover{
    font-weight: bold;
    border-bottom: 4px solid #ff6200;
}

ul li ul li{
    font-size: 14px;
    display: none;
    position: relative;
    width: 102px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    font-family: open_sansregular;
    left: 25px;
    border: 0;
    padding: 0;
    font-weight: 200;
}

ul li ul li:hover ul{
    display: block;
    margin-left: 100px;
    top: 0px;
    font-family: open_sansbold;
}

ul li ul li ul{
    position: absolute;
    display: none;
    width: 102px;
    font-family: open_sansregular;
    text-align: center;
    margin-right: 10px;
}

<!DOCTYPE HTML>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=0.80">
    <title>Job Test</title>
    <link rel="stylesheet" href="css/stylesheet.css" type="text/css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
</head>
<body class="window-size">
<div class="top-header">
    <h2 class="left-header1">CALL US NOW! <span class="left-header2"> 385.154.11.28.35</span></h2>
    <h2 class="right-header1">LOGIN <span class="right-header2"> SIGNUP</span></h2>
</div>
<div class="nav-menu">
    <h2 class="logo">YOUR<span class="logo2">LOGO</span></h2>
    <div class="navbar">
        <ul class="list1">
            <li><a>TITLE 7</a></li>
            <li><a>TITLE 6</a></li>
            <li><a>TITLE 5</a></li>
            <li><a>TITLE 4</a></li>
            <li><a>TITLE 3</a></li>
            <li><a>TITLE 2</a>
                <ul>
                    <li><a>SUBMENU 1</a></li>
                    <li><a>SUBMENU 2</a></li>
                    <li><a>SUBMENU 3</a>
                        <ul>
                            <li><a>SUBMENU 1</a></li>
                            <li><a>SUBMENU 2</a></li>
                            <li><a>SUBMENU 3</a></li>
                        </ul></li>
                </ul></li>
            <li><a>TITLE 1</a></li>
        </ul>
    </div>
</div>
<div class="breadcrumbs">
    <p class="breadcrumbs-plain"> Home / Who we are / <span style="color: black"> Contact</span></p>
    <p class="contact-title">Contact</p>
    <p class="lorem">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras quis orci sed tortor porta porta. Curabitur rutrum bibendum pretium. Nulla cursus pulvinar nisi sed imperdiet.
        Sed quis pharetra dui. Pellentesque lobortis, est sed fermentum efficitur, turpis elit porta lorem, in ornare dui velit et orci.</p>
</div>
<div class="split-left">
    <h2 class="split-title">CONTACT US</h2>
    <hr class="contact-rule">
    <form>
        <input type="text" placeholder="Name *" class="fullname-textbox"><br>
        <input type="text" placeholder="Phone *" class="half-textbox-phone">
        <input type="text" placeholder="Email *" class="half-textbox-email"><br>
        <textarea name="message" placeholder="Message *" class="message"></textarea><br>
        <input type="submit" value="SUBMIT" class="submit">
    </form>
</div>
<div class="split-right">
    <h2 class="split-title">REACH US</h2>
    <hr class="reach-rule">
    <p class="coalition">
        <span style="font-size: 16pt; line-height: 40px;">Coalition Skills Test</span><br>
        535 La Plata Street<br>
        4200 Argentina<br><br>
        Phone: 385.1514.28.38<br>
        Fax: 385.154.35.66.78
    </p>
    <div class="social-media">
        <a href="#" class="fa fa-facebook"></a>
        <a href="#" class="fa fa-twitter"></a>
        <a href="#" class="fa fa-linkedin"></a>
        <a href="#" class="fa fa-pinterest"></a>
    </div>
</div>

</body>
</html>

Answer 1

首先，您可以使用弹性框概念或网格来提高响应速度，您可以找到弹性框快速教程here，对于网格可以使用here

首先，为了使鼠标悬停的下拉菜单正常运行，您可以在here中找到很好的主意