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CSS元素無法覆蓋頁面的100％

[英]CSS element doesn't cover 100% of the page

 原文  2018-04-23 01:12:52  4   3    html/ css

問題描述

首先，這是大學的任務，盡管看起來很基本，但我一直在嘗試解決最近3個小時的問題，但似乎沒有任何效果。

因此，我將側面導航欄設置為height: 100; 但是，它沒有明顯的原因接近頁面底部。 調整窗口大小足以將導航欄推過頁腳，這使頁腳懸在頁面上最后一個元素的正下方

HTML： 

<!DOCTYPE html>
<html lang=en>
<head>
    <meta charset="utf-8" />
    <link rel="stylesheet" href="css/style.css">
    <link rel="stylesheet" type="text/css" media="screen and (max-width: 850px)" href="css/style2.css" />
    <link rel="stylesheet" type="text/css" media="screen and (max-width: 450px)" href="css/style3.css" />
    <!-- <script src="js/main.js"></script> -->
    <title>CS15020: Web Development Tools</title>
</head>

<body>
<header class="text element-color">
    <h1>David’s assignment 2 for CS15020</h1>
</header>

<nav>
    <a href="">Email me</a><br />
    <a href="prac2.html">My CV (no CSS)</a><br />
    <a href="prac2_centered.html">My CV (with CSS)</a><br />
    <a href="..">Homepage</a><br />
    <a href="" target="_blank">My website</a><br />
    <br /> <!-- dirty way of making media queries work -->
    <a href="http://validator.w3.org/check?uri=referer">Valid HTML5</a><br />
    <a href="http://jigsaw.w3.org/css-validator/check/referer">Valid CSS</a>
</nav>

<main>
<br />
Please enter your details below:
<form id="userDetails" action="/">
<p>
<input type="text" id="users_name" placeholder="Name" />
<br />
<select name="grade">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select>

<input type="button" name="send" onclick="process()" value="Submit" />
</form>

<p id="out"></p>
<img src="images/web.jpg" alt="web image"></img>
<p id="dateModified"></p>

<script>
function process() {
        var txt = "";
        var hoursOut = "";
        var name = document.getElementById("users_name").value;

        switch(document.forms['userDetails'].grade.selectedIndex){
        case 0:
            txt="1/5 (20%); Wow you must really suck at life...";
            break;
        case 1:
            txt="2/5 (40%); Meh...";
            break;
        case 2: 
            txt="3/5 (60%); Well... at least you know something, right?";
            break;
        case 3:
            txt="4/5 (80%); It's getting good!";
            break;
        case 4:
            txt="5/5 (100%); Awesome bro, keep it goin'!";
            break;
        }

    var hours = (new Date()).getHours();

    if (hours >= 12 && hours < 18) {
    hoursOut = "afternoon";
    } else if (hours < 12 && hours >= 5) {
    hoursOut = "morning";
    } else if (hours >= 18 && hours <= 23) {
    hoursOut = "evening";
    } else hoursOut = "night";


    var finalOut = document.getElementById("out");
    finalOut.innerHTML = "Good " + hoursOut + ", " + name + "! You expected grade " + txt;
    }

    var mod = new Date(document.lastModified);
    var modFormatted = mod.toLocaleString();
    document.getElementById("dateModified").innerHTML = "Last modified: " + modFormatted;
</script>
</main>

<div id="footer" class="text element-color">
    CS15020 - WEB DEVELOPMENT TOOLS
</div>
</body>

CSS： 

main {
    margin-left: 15%;
    min-height:100%;
    margin-bottom: 1%;
    overflow: hidden;
}

body
{
    margin: 0;
    background-color: #F8E0E0;
}

.text {
    font-family: Arial, Helvetica, sans-serif;
}

.element-color {
    color: #818181;
}

header {
    background-color: #111;
    width: 100%;
}

header h1 {
    margin: 0;
    padding-top: 2px;
    padding-bottom: 4px;
    padding-left: 5px;
}

nav {
    position: absolute;
    display: block;
    padding-top: 5px;
    padding-left: 0;
    width: 12%;
    height: 100%;
    background-color: #111;
    border-top: 2px solid #818181;
}

nav a {
    text-decoration: none;
    color: #818181;
    padding: 6px 8px 6px 16px;
}

nav a:hover{
    color: white;
}

img {
    max-width: 100%;
    height: auto;
}

#footer { 
    width: 100%;
    position: relative;
    bottom: 0;
    text-align: center;
    margin: 0;
    background-color: #111;
    color: #818181;

}

CSS＃2： 

main {
    margin-left: 140px;
    margin-bottom: 1%;
    overflow: hidden;
}

body
{
    margin:0;
    background-color: #F8E0E0;
}

.text {
    font-family: Arial, Helvetica, sans-serif;
}

.element-color {
    color: #818181;
}

header {
    background-color: #111;
    width: 100%;
    /*border-bottom: 2px solid white;*/
}

header h1 {
    margin: 0;
    padding-top: 2px;
    padding-bottom: 4px;
    padding-left: 5px;
    font-size: 100%;
}

nav {
    position: absolute;
    padding-top: 5px;
    padding-left: 0%;
    width: 16%;
    height: 100%;
    background-color: #111;
    border-top: 2px solid #818181;
}

nav a {
    text-decoration: none;
    font-size: 85%;
    color: #818181;
    padding: 6px 8px 6px 16px;
}

nav a:hover{
    color: white;
}

img {
    max-width: 100%;
    height: auto;
}

#footer { 
    width: 100%;
    position: relative;
    bottom: 0;
    text-align: center;
    margin: 0;
    background-color: #111;
    color: #818181;

}

CSS＃3： 

main {
    z-index: 1;
    margin-left: 5%;
    padding-top: 15%;
    margin-bottom: 1%;
    overflow: hidden;
}

body
{
    margin:0;
    background-color: #F8E0E0;
}

.text {
    font-family: Arial, Helvetica, sans-serif;
}

.element-color {
    color: #818181;
}

header {
    background-color: #111;
    /*border-bottom: 2px solid white;*/
}

header h1 {
    margin: 0;
    padding-top: 2px;
    padding-bottom: 4px;
    padding-left: 5px;
    font-size: 100%;
}

nav {
    z-index: 2;
    position: fixed;
    overflow: hidden;
    display: block;
    padding-bottom: 5px;
    width: 100%;
    height: auto;
    border-top: 2px solid #818181;
}

nav a {
    text-decoration: none;
    font-size: 85%;
    /*color: #818181;*/
    padding: 6px 8px 6px 16px;
}

br { 
    display: none;
}

nav a:hover{
    color: white;
}

img {
    max-width: 100%;
    height: auto;
}

#footer { 
    width: 100%;
    position: absolute;
    bottom: 0;
    text-align: center;
    margin: 0;
    background-color: #111;
    color: #818181;

}

CSS工作表＃2和＃3，僅用於媒體查詢

更新：您實際上可以在這里看到整個內容； 我現在將高度更改為固定。

3 個解決方案

解決方案1
 1  2018-04-23 01:37:10

通過Flex解決了可滾動內容的問題。 

 .outer { display: flex; } .nav { flex: 1; background: black; } .main { flex: 4; } main { margin-left: 15%; min-height: 100%; margin-bottom: 1%; overflow: hidden; } body { margin: 0; background-color: #F8E0E0; } .text { font-family: Arial, Helvetica, sans-serif; } .element-color { color: #818181; } header { background-color: #111; width: 100%; height: 40px; } header h1 { margin: 0; padding-top: 2px; padding-bottom: 4px; padding-left: 5px; } nav a { text-decoration: none; color: #818181; } nav a:hover { color: white; } img { max-width: 100%; height: auto; } #footer { width: 100%; bottom: 0; text-align: center; margin: 0; background-color: #111; color: #818181; } 
 <body> <header class="text element-color"> <h1>David's assignment 2 for CS15020</h1> </header> <div class="outer"> <div class="nav"> <nav> <a href="">Email me</a><br /> <a href="prac2.html">My CV (no CSS)</a><br /> <a href="prac2_centered.html">My CV (with CSS)</a><br /> <a href="..">Homepage</a><br /> <a href="" target="_blank">My website</a><br /> <br /> <!-- dirty way of making media queries work --> <a href="http://validator.w3.org/check?uri=referer">Valid HTML5</a><br /> <a href="http://jigsaw.w3.org/css-validator/check/referer">Valid CSS</a> </nav> </div> <div class="main"> <main> <br /> Please enter your details below: <form id="userDetails" action="/"> <p> <input type="text" id="users_name" placeholder="Name" /> <br /> <select name="grade"> <option>1</option> <option>2</option> <option>3</option> <option>4</option> <option>5</option> </select> <input type="button" name="send" onclick="process()" value="Submit" /> </form> <p id="out"></p> <img src="images/web.jpg" alt="web image"> <p id="dateModified"></p> <br /> Please enter your details below: <form id="userDetails" action="/"> <p> <input type="text" id="users_name" placeholder="Name" /> <br /> <select name="grade"> <option>1</option> <option>2</option> <option>3</option> <option>4</option> <option>5</option> </select> <input type="button" name="send" onclick="process()" value="Submit" /> </form> <p id="out"></p> <img src="images/web.jpg" alt="web image"> <p id="dateModified"></p> <br /> Please enter your details below: <form id="userDetails" action="/"> <p> <input type="text" id="users_name" placeholder="Name" /> <br /> <select name="grade"> <option>1</option> <option>2</option> <option>3</option> <option>4</option> <option>5</option> </select> <input type="button" name="send" onclick="process()" value="Submit" /> </form> <p id="out"></p> <img src="images/web.jpg" alt="web image"> <p id="dateModified"></p> <br /> Please enter your details below: <form id="userDetails" action="/"> <p> <input type="text" id="users_name" placeholder="Name" /> <br /> <select name="grade"> <option>1</option> <option>2</option> <option>3</option> <option>4</option> <option>5</option> </select> <input type="button" name="send" onclick="process()" value="Submit" /> </form> <p id="out"></p> <img src="images/web.jpg" alt="web image"> <p id="dateModified"></p> <br /> Please enter your details below: <form id="userDetails" action="/"> <p> <input type="text" id="users_name" placeholder="Name" /> <br /> <select name="grade"> <option>1</option> <option>2</option> <option>3</option> <option>4</option> <option>5</option> </select> <input type="button" name="send" onclick="process()" value="Submit" /> </form> <p id="out"></p> <img src="images/web.jpg" alt="web image" /> <p id="dateModified"></p> </main> </div> </div> <div id="footer" class="text element-color"> CS15020 - WEB DEVELOPMENT TOOLS </div> </body>

解決方案2
 1 已采納  2018-04-23 01:44:22

嘗試在CSS中將nav's位置從absolute位置更改為fixed位置（第一個）。 它為我工作。

EDITED 

 header {
    background-color: #111;
    width: 100%;
    position: fixed;
}

nav {
    position: fixed;
    display: block;
    padding-top: 5px;
    padding-left: 0;
    width: 12%;
    height: 100%;
    margin-top: 42px;
    background-color: #111;
    border-top: 2px solid #818181;
}

解決方案3
 0  2018-04-23 03:25:02

如果存在其他因素，固定位置可能會更好，盡管這可能不適用於您想要的最終產品。

兼容性不是很好，但是您可以嘗試將高度設置為100vh。 這會將其設置為用戶視口的100 1/100，即整個屏幕的視口。

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