I'm very new to all of this and am trying to build this website, but the main image on the page is not centering. I've tried all sorts of centering things but they don't work. Also, the width percentage is ignored too.
I've readjusted margin/padding to 0. don't know what it could be.
css for the picture:
#pictures img{
width:"70%";
margin: 0 auto;
padding-bottom: 80px;
padding-top: 20px;
}
and the html div that has to do with it:
<div id="pictures">
<img src="img/homepage.png" alt="HomePage"></div>
FULL HTML
<!DOCTTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>Jacobs Bookeeping</title>
<link rel="stylesheet" href="css/normalize.css" type="text/css" media="screen">
<link rel="stylesheet" href="css/style-no-grid.css" type="text/css" media="screen">
</head>
<body>
<div class="container clearfix">
<div id="main">
<div id="header">
<img src="img/logo.png" alt="Jacobs Bookkeeping Logo" width="248">
</div>
<div id="twitter">
<img src="img/twitter.jpg" alt="Twitter">
</div>
<div id="facebook">
<img src="img/facebook.jpg" alt="Facebook">
</div>
<ul class="nav">
<li>About Us</li>
<li>Services</li>
<li>Contact Us</li>
<li class="last">Resources</li>
</ul>
<div id="pictures">
<img src="img/homepage.png" alt="HomePage">
</div>
</div>
</div>
<div id="copyright">
<p>K. RONI JACOBS, <em>KEEPER OF THE BOOKS</em> — EMAIL JACOBS BOOKKEEPING — CALL 206.861.5664 — © 2013 JACOBS BOOKEEPING    </p>
</div>
</body>
</html>
FULL CSS
html {
margin: 0px;
padding: 0px;
}
body {
font-family:'Futura', sans-serif;
color: #FFFFFF;
font-size: 13;
margin: 0px;
padding: 0px;
}
#main {
border-top: 10px solid #EAE1C9;
border-right: 10px solid #EAE1C9;
border-left: 10px solid #EAE1C9;
padding-bottom: 20px;
background: url('../img/bg-jacobs.jpg') repeat;
background-color:#96B9BF;
}
a {
color: #FFFFFF;
text-decoration: none;
}
#facebook img{
float: right;
padding: 45px 5px 10px 10px;
position: static;
}
#twitter img{
float: right;
padding: 45px 50px 20px 0px;
position: static;
}
#header img {
padding: 40px 0px 0px 40px;
float: left;
position: static;
}
ul.nav {
margin-top: 45px;
list-style: none;
text-transform: uppercase;
float: right;
position: relative;
}
ul.nav li {
margin: 0px 50px 0px 60px;
display: inline;
}
ul.nav li a {
color: #FFFFFF;
}
#pictures img{
width:"80%";
margin: 0 auto;
padding-bottom: 80px;
padding-top: 20px;
display: block;
text-align: center;
}
#copyright {
text-align: right;
background: #867131;
border-top: 10px solid #EAE1C9;
position: fixed;
bottom: 0;
width: 100%;
height: 30px;
font-size: 10px;
letter-spacing: 2px;
color: white;
}
.container{
width: auto;
margin: 0 auto;
}
.clear{clear:both;display:block;overflow:hidden;visibility:hidden;width:0;height:0}.clearfix:after{clear:both;content:' ';display:block;font-size:0;line-height:0;visibility:hidden;width:0;height:0}* html .clearfix,*:first-child+html .clearfix{zoom:1}
Put display: block; on it. By default, images are inline.
To center inline —default for image— or inline-block elements, just center it as text. This means, you will need to use text-algin on the parent element:
div#pictures {
text-align: center;
}
The other solution is the one from #One Trick Pony, and display the image as a block element and just then apply the automatic margin.
#pictures img{
display:block;
}
Add this code then i will be centered
i know this is an old post, but wanted to share how i solved the same problem.
My image was inheriting a float:left from a parent class. By setting float:none I was able to make margin:0 auto and display: block work properly. Hope it may help someone in the future.
You have two options:
Remove img from #pictures and then put the image inside that div.
Add the #pictures to the image Tag in html (inline style).
You might remove the display tag in #pictures.
Good luck with that.
Related
newbie to HTML & CSS here with only 2 weeks learning under my belt. I'm trying to replicate the Google web page and although I have managed to center the "Google" logo and the searchbar underneath it, i've done it using margin-top and margin-left properties. I did try margin: 0 auto; with some other properties but could not get anything to work. The times when I did manage to center the logo using different properties, it wasn't fully central on the page. Basically what i'm saying is that the way i've done it works, but I know it isn't the most efficient way of making these two elements central on the page and it certainly doesn't represent a responsive webpage.
Would anyone mind having a look at the code i've pasted below and offer advice on the best way to go about this? I've included the whole HTML and CSS code, incase anyone wishes to load the site in Notepad etc. Many thanks in advance!
<!DOCTYPE html>
<head>
<title>Google</title>
<link href="stylesheet.css" type="text/css" rel="stylesheet">
</head>
<body>
<div class="nav">
<ul>
<li id="sign-in">Sign in</li>
<li id="grid-list">
<center><img src="grid-list.jpg"/></center>
</li>
<li id="images">Images</li>
<li id="gmail">Gmail</li>
</ul>
</div>
<div class="main">
<img src="logo.jpg" alt="Google"/>
<p id="searchbar"></p>
</div>
</body>
* {
box-sizing: border-box;
}
div.nav li {
display: inline-block;
font-family: Helvetica;
font-size: 13px;
width: auto;
float: right;
color: #414042;
}
#gmail {
margin-right: 15px;
margin-top: 7px;
padding: 0;
}
#images {
margin-right: 22px;
margin-top: 7px;
padding: 0;
}
#sign-in {
margin-right: 22px;
padding: 7px 13px;
background-color: #1789E8;
color: white;
border-radius: 2px;
font-weight: bold;
height: auto;
text-align: center;
}
#grid-list {
margin-right: 22px;
margin-top: 7px;
}
.main img {
margin-left: 536px;
margin-top: 182px;
}
#searchbar {
border: 1px solid #E8DAEB;
border-radius: 2px;
padding: 0;
text-align: center;
margin-left: 390px;
margin-right: 375px;
margin-top: 21px;
height: 46px;
width: 585px;
}
To center an image you can use text-align:center; on the parent element. For the searchbar you can use margin:0 auto; as long as the search bar has a defined width:
* {
box-sizing: border-box;
}
div.nav li {
display: inline-block;
font-family: Helvetica;
font-size: 13px;
width: auto;
float: right;
color: #414042;
}
#gmail {
margin-right: 15px;
margin-top: 7px;
padding: 0;
}
#images {
margin-right: 22px;
margin-top: 7px;
padding: 0;
}
#sign-in {
margin-right: 22px;
padding: 7px 13px;
background-color: #1789E8;
color: white;
border-radius: 2px;
font-weight: bold;
height: auto;
text-align: center;
}
#grid-list {
margin-right: 22px;
margin-top: 7px;
}
.main {
padding-top:182px;
text-align:center;
}
#searchbar {
border: 1px solid #E8DAEB;
border-radius: 2px;
padding: 0;
text-align: center;
margin:21px auto 0;
height: 46px;
width: 585px;
}
<!DOCTYPE html>
<head>
<title>Google</title>
<link href="stylesheet.css" type="text/css" rel="stylesheet">
</head>
<body>
<div class="nav">
<ul>
<li id="sign-in">Sign in</li>
<li id="grid-list">
<center><img src="grid-list.jpg"/></center>
</li>
<li id="images">Images</li>
<li id="gmail">Gmail</li>
</ul>
</div>
<div class="main">
<img src="https://www.google.com/images/branding/googlelogo/1x/googlelogo_color_272x92dp.png" alt="Google"/>
<p id="searchbar"></p>
</div>
</body>
For the searchbar you should be using an input rather than a p(paragraph). Another tip is that instead of defining margin-top, margin-right, margin-bottom, margin-left, you can use the shorthand margin. The first value is the top margin, next is right margin, then bottom, then left.
If you want the top/bottom and right/left margins to be the same, respectively, you can define 2 values(first being top and bottom and second being right and left). If you want to define a different top and bottom margin but use the same margin for left/right you can define 3 values(first being top, second being right/left and third being bottom).
For example:
margin-top:20px;
margin-right:50px;
margin-bottom:20px;
margin-left:50px;
can be written as
margin:20px 50px;
Or the following:
margin-top:50px;
margin-right:100px;
margin-bottom:20px;
margin-left:100px;
can be written as:
margin:50px 100px 20px;
Same thing goes for padding.
you can't use pixels to set margin!
you have to set margin of the main class to 50% of page height and width like this:
(to resolve problems change percent of size and margin to fit 100%)
* {
box-sizing: border-box;
}
div.nav li {
display: inline-block;
font-family: Helvetica;
font-size: 13px;
width: auto;
float: right;
color: #414042;
}
#gmail {
margin-right: 15px;
margin-top: 7px;
padding: 0;
}
#images {
margin-right: 22px;
margin-top: 7px;
padding: 0;
}
#sign-in {
margin-right: 22px;
padding: 7px 13px;
background-color: #1789E8;
color: white;
border-radius: 2px;
font-weight: bold;
height: auto;
text-align: center;
}
#grid-list {
margin-right: 22px;
margin-top: 7px;
}
.main {
padding-top:50%;
padding-left:50%;
}
#searchbar {
border: 1px solid #E8DAEB;
border-radius: 2px;
padding: 0;
text-align: center;
margin:21px auto 0;
height: 46px;
width: 585px;
}
img{
margin-left:50%;
}
html , body{
height:100%;
width:100%;
}
<!DOCTYPE html>
<head>
<title>Google</title>
<link href="stylesheet.css" type="text/css" rel="stylesheet">
</head>
<body>
<div class="nav">
<ul>
<li id="sign-in">Sign in</li>
<li id="grid-list">
<center><img src="grid-list.jpg"/></center>
</li>
<li id="images">Images</li>
<li id="gmail">Gmail</li>
</ul>
</div>
<div class="main">
<img src="https://www.google.com/images/branding/googlelogo/1x/googlelogo_color_272x92dp.png" alt="Google"/>
<p id="searchbar"></p>
</div>
</body>
in advance i appreciate all help i can get since im new to HTML and CSS, i want to center the 3 images, but i cant center them, im sure its something silly but i cant figure it out. i added an image so you can see what the layout is.
body {
font-family: Arial, Verdana, sans-serif;
color: #000;
font-weight: bold;
margin: 0;
}
#wrapper {
width: 100%;
}
#logo {
float: left;
}
#navigation {
clear: both;
background-color: #14171a;
width: 100%;
height: 70px;
box-shadow: 0px 5px 3px #000;
}
#navigation ul li {
display: inline;
margin-left: 50px;
}
#navigation ul li a {
text-decoration: none;
color: #fff;
font-size: 20px;
}
#navigation ul {
width: 570px;
padding-top: 20px;
margin: 0px auto 0px auto;
}
#midcontent {
}
h1 {
margin: 0px auto 0px auto;
margin-top: 50px;
padding: 10px 0px 10px 10px;
color: #fff;
background-color: #6ac045;
font-size: 170%;
border-radius: 8px;
width: 400px;
}
#midcontent article {
}
figure {
float: left;
width: 300px;
}
figure img {
display: inline-block;
width: 300px;
height: 244px;
}
figcaption {
text-align: center;
}
<!DOCTYPE html>
<html>
<head>
<title>Electronix CR</title>
<link rel="stylesheet" type="text/css" href="CSS/Electronix.css">
</head>
<body>
<div id="wrapper">
<header id="logo">
<img src="images/Electronix.png">
</header>
<nav id="navigation">
<ul>
<li>Home</li>
<li>About</li>
<li>Services</li>
<li>Contact</li>
</ul>
</nav>
<h1>What can we fix for you today</h1>
<section id="midcontent">
<article class="content">
<figure><img src="images/Diagnostic.jpg" alt="Helianthus" />
<figcaption>Siagnostic</figcaption>
</figure>
<figure><img src="images/LCD.jpg" alt="Passiflora" />
<figcaption>LCD Replacement</figcaption>
</figure>
<figure><img src="images/Battery.jpg" alt="Nyctocalos" />
<figcaption>Battery Replacement</figcaption>
</figure>
</article>
</section>
</div>
</body>
</html>
have you attempted to remedy the issue using the BootStrap framework? Using the grid you will be able to place the images in columns and rows based on the size you desire. BootStrap works in a grid of 12. So you would require something along the lines of
<div class = row>
<div class = col-md-4>
<insert image here or content here>
</div>
</div>
You may also need to add this to your images:
.center-block {
display: block;
margin-right: auto;
margin-left: auto;
}
essentially you would repeat the process as needed. each image with "col-md-4" as 4*3=12. It may require additional adjustments, but bootstrap will do almost all the heavy lifting. Below is a link to BootStrap and it's documentation. Good luck friend.
http://getbootstrap.com/
I'm having issues with clearing floats (could be something else?). I want to make the #newsbar div cleared from the previous floats. So, it's width can expand 100% across the page/browser
I think I've done what I can, and am becoming real frustrated with this. This is what it looks like currently:
Current output:
http://postimg.org/image/l2rxf4603/
If someone can look over my HTML and CSS, I'd much appreciate it. Thanks!
HTML & CSS Code:
<!DOCTYPE html>
<html lang="en">
<head>
<title>Rob's BBC</title>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width; initial-scale=1" />
<style type="text/css">
body {
margin: 0;
font-family: Arial, Helvetica, sans-serif;
}
#topbar {
background-color:#7A0000;
width: 100%;
height: 45px;
color: #FFFFFF;
}
.fixedwidth {
width: 1050px;
margin: 0 auto;
/* background-color: green; */
}
/* BBC Logo */
#logodiv {
padding-top: 8px;
float: left;
border-right: 1px solid #990000;
padding-right: 15px;
}
/* Sign In Text */
#signindiv {
font-weight: bold;
font-size: 0.9em;
float: left;
padding: 5px 50px 8px 8px;
border-right: 1px solid #990000;
}
/* Sign In Image */
#signindiv img {
position: relative;
float: left;
margin: 6px 0 0 2px;
}
#signindiv p {
float: left;
margin: 10px 0 0 4px;
}
#topmenudiv {
float: left;
}
#topmenudiv ul {
float: left;
margin: 0;
padding: 0;
}
#topmenudiv li {
list-style-type: none;
font-weight: bold;
font-size: 0.9em;
border-right: 1px solid #990000;
height: 100%;
padding: 15px 20px 10px 20px;
text-align: center;
float: left;
}
#searchdiv {
float: left;
padding: 7px 0 0 10px;
}
#searchdiv input {
height: 25px;
border: none;
font-size: 0.9em;
padding-left: 5px;
padding-right: 22px;
background-image:url('images/magnifyglass.png');
background-repeat: no-repeat;
background-position: right center;
}
.break {
clear: both;
}
#newsbar {
background-color:#990000;
width: 100%;
height: 45px;
color: #FFFFFF;
}
</style>
</head>
<body>
<div id="container">
<div id="topbar">
<div class="fixedwidth">
<div id="logodiv">
<img src="images/bbclogo.png" alt="bbclogo" height="28" />
</div> <!-- logodiv -->
<div id="signindiv">
<img src="images/signinlogo.png" alt="signinlogo" />
<p>Sign In</p>
</div> <!-- signindiv -->
<div id="topmenudiv">
<ul>
<li>News</li>
<li>Sports</li>
<li>Weather</li>
<li>iPlayer</li>
<li>TV</li>
<li>Radio</li>
<li>More...</li>
</ul>
</div> <!-- topmenudiv -->
<div id="searchdiv">
<input type="text" placeholder="search" />
</div> <!-- searchdiv -->
<div class="break"></div>
<div id="newsbar">
<div class="fixedwidth">
</div>
</div> <!-- newsbar -->
</div> <!-- fixedwidth -->
</div> <!-- topbar -->
</div> <!-- container -->
</body>
</html>
JsFiddle: http://jsfiddle.net/1f030av9/
Ok, no floating problem, you just have to get the <div> outside of it's parent ( another <div> with classname "fixedwidth"). Also removed some paddings in order to make the search bar not go to the 2nd line.
Changed css:
#searchdiv {
float: left;
padding: 7px 0 0 10px;
}
Became:
#searchdiv {
float: left;
padding: 7px 0 0 0px;
}
Removed line padding-right: 22px; from #searchdiv input
Here's a fiddle.
Your <div class="fixedwidth"> is set to a width of 1050px; and your div class="newsbar"> is a child of class="fixedwidth". You've set 'newsbar' to 100% but it cannot override the attributes of the parent div class="fixedwidth"
your fiddle
It works for me
It is stretching to 100%
with slight edits not relating to your issue though
#newsbar {
background-color:#990000;
width: 100%;
height: 45px;
color: #FFFFFF;
clear:both;
}
#searchdiv {
float: left;
padding: 7px 0 0 0px;
}
Removed padding-right too from #searchdiv input too
In my page I want it so that when you resize the page past the point of the pictures, that the pictures will go into another row, all the way so each picture has it's own row. And then potentially I won't need any media queries. But unfortunaltely I can't find a way to center. I have tried everything I can think of, aside of making hundreds of media queries with different positioning. I can't make it a block because then it won't go into rows, I have tried margin: 0 auto;. I have tried changing the padding, I have even tried using the html align="center". Nothing is working. Here is the website http://spencedesign.netau.net/singaporehome.html Also I have a minor issue, sorry to croud this with two questions. But when it is in it's mobile state, there is no 10px padding at the bottom, and the singapore title is on the left side rather than floating. Here is my code
<html>
<head>
<title> Singapore - Home </title>
<link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />
<meta name="viewport" content="width=device-width, initial scale=1.0">
<style>
*
{
margin: 0;
padding: 0;
}
body
{
background: url('woodbackground.jpg');
background-size: cover;
min-height: 100%;
min-width: 100%;
position: relative;
top: 0; bottom: 0; left: 0; right: 0;
}
#container
{
width: 90%;
margin: 0 auto;
}
h1
{
font: bold 65px Helvetica, Arial, Sans-serif;
text-align: center;
color: #eee;
position: relative;
top: 60px;
}
h3
{
font: 25px Helvetica, Arial, Sans-serif;
text-align: center;
color: #eee;
position: relative;
top: 80px;
}
ul#gallery
{
list-style: none;
display: inline;
margin: 0 auto;
position: relative;
top: 175px;
width: 1300px;
}
ul#gallery li a
{
float: left;
padding: 10px 10px 25px 10px;
background-color: #eee;
border: 1px solid #fff;
-moz-box-shadow: 0px 2px 15px #333;
position: relative;
margin: 10px;
text-decoration: none;
}
ul#gallery li a:hover
{
position: relative;
top: -15px;
}
ul#gallery li a img
{
height: 150px;
width: 250px;
max-width: 100%;
}
ul#gallery li a p
{
margin-top: 25px;
text-align: center;
color: #000;
font: Helvetica, Arial, Sans-serif;
text-decoration: none;
font-size: 20px;
}
#media screen and (max-width: 640px)
{
ul#gallery
{
left: 2.2%;
width: 600px;
}
ul#gallery li a:hover
{
top: 0px;
}
}
</style>
<body>
<div id="container">
<h1> Singapore </h1>
<h3><i> Singapore is the worlds first machine that works </i>- Lee Kuan Yew </h3>
<ul id="gallery">
<li> <img src="gallery.jpg" alt="gallery" /> <p> Gallery </p> </li>
<li> <img src="facts.jpg" alt="facts" /> <p> Facts </p></li>
<li> <img src="tour.jpg" alt="tour" /> <p> Tour </p></li>
<li> <img src="author.jpg" alt="author" /> <p> Author </p> </li>
</ul>
<br/>
</div><!-- Container -->
</body>
<html>
Thanks!
Ive checked your link and simply adding text-align:center; to your container will make the uls centered (because you have them as inline elements)
#container
{
width: 90%;
margin: 0 auto;
text-align: center;
}
Instead of floating those items, you should instead ensure that the items use display: inline-block. Then you can set text-align: center on the parent element.
Here is a testcase that shows the effect http://oksushi.com/test/centered-tabs/
As I am transitioning from using template layouts to writing my own css scripts, I have run into many issues, but there's one preventing me from continuing. I have successfully created a 3 column layout with floating divs, however upon browser re-size the right column overlays the middle div. I have imported the script found on Div sections shifts when i resize the window with no success. Basically I want the layout to behave like the current one, at http://www.allstarselectric.com , but using %. I am using % for cross resolution support, so is there a workaround/solution, or are pixels absolutely necessary? Any help would be greatly appreciated.
CSS:
body {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px;
color: #666;
font-family: Tahoma, Geneva, sans-serif;
font-size: 13px;
line-height: 1.7em;
background-color: #4a4d51;
background-image: url(images/templatemo_body.jpg);
background-repeat: repeat-x;
background-position: top
}
.content{
position: fixed;
width: 100%;
height: 100%;
background-image: url(images/templatemo_body.jpg);
}
.contentbody{
float: left;
width: 70%;
height: 100%;
}
.wrapper {
width:100%
}
.sidebar{
float: left;
width: 15%;
height: 100%;
border: 0px solid #BBB;
background-color:#dddddd;
}
.sidebar li{
list-style-type:none;
margin:0;
padding:0;
}
.sidebar2{
float: left;
width: 15%;
height: 100%;
border: 0px solid #BBB;
background-color:#dddddd;
}
.sidebar2 li{
list-style-type:none;
text-align: center;
margin:0;
padding:0;
}
.chromestyle{
width: 100%;
font-weight: bold;
}
.chromestyle:after{ /*Adds margin between menu and rest of content in Firefox*/
content: ".";
display: block;
height: 0;
clear: both;
visibility: hidden;
}
/*Affects the background/menustyle*/
.chromestyle ul{
border: 0px solid #BBB;
width: 730px;
height: 45px;
background: url(imgs/navm.jpg) center center no-repeat; /*THEME CHANGE HERE*/
padding: 0 15px;
margin: 0;
text-align: left; /*set value to "left", "center", or "right"*/
}
.chromestyle ul li{
display: inline;
}
/*Affects menu text*/
.chromestyle ul li a{
float: left;
display: block;
color: #000;
padding: 8px 20px;
margin: 0 1px 0 0;
text-decoration: none;
border: none;
}
.chromestyle ul li a:hover, .chromestyle ul li a.selected{ /*script dynamically adds a class of "selected" to the current active menu item*/
color: #fff;
background: #ff0011
center center repeat-x; /*THEME CHANGE HERE*/
}
.current { color: #fff; background: ; }
/* ######### Style for Drop Down Menu ######### */
.dropmenudiv{
position:absolute;
top: 0;
border: 1px solid #BBB; /*THEME CHANGE HERE*/
border-bottom-width: 0;
font:normal 12px Verdana;
line-height:18px;
z-index:100;
background-color: #d5a30b;
width: 200px;
visibility: hidden;
}
.dropmenudiv a{
width: auto;
display: block;
text-indent: 3px;
border-bottom: 1px solid #BBB; /*THEME CHANGE HERE*/
padding: 2px 0;
text-decoration: none;
font-weight: bold;
color: black;
}
* html .dropmenudiv a{ /*IE only hack*/
width: 100%;
}
.dropmenudiv a:hover{ /*THEME CHANGE HERE*/
background-color: #F0F0F0;
}
HTML:
<html>
<head>
<title>Allstars Electric</title>
<meta name="keywords" content="electricians," />
<meta name="description" content="Electrical Contractor DFW" />
<link rel="stylesheet" type="text/css" href="style.css" />
<script src="js/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript" src="js/drop.js">
</script>
<style type="text/css">
<!--
.style2 {color: #FFFF00}
.style3 {
font-size: 36px
}
-->
</style>
<SCRIPT LANGUAGE="JavaScript">
<!--
function JumpToIt(list) {
var newPage = list.options[list.selectedIndex].value
if (newPage != "None") {
location.href=newPage
}
}
//-->
</SCRIPT>
</head>
<body>
<div class="wrapper">
<div class="sidebar" id="sidebar"><li>home</li></div>
<div class="contentbody">
<center>
<div class="chromestyle" id="chromemenu">
<ul>
<li>Home</li>
<li>Special Offers</li>
<li>Services</li>
<li>About Us</li>
<li>Contact</li>
<li>Themes</li>
</ul>
</div>
<!--1st drop down menu -->
<div id="dropmenu1" class="dropmenudiv">
1
2
3
4
5
</div>
<!--2nd drop down menu -->
<div id="dropmenu2" class="dropmenudiv" style="width: 150px;">
Electrical
Heating & Air Conditioning
</div>
<!--3rd drop down menu -->
<div id="dropmenu3" class="dropmenudiv" style="width: 150px;">
Dark
Light
</div>
<!-- Dropdown End -->
<br><tr>text/other</br></tr>
</center>
</body>
</div>
</div>
<div class="sidebar2" id="sidebar2"><li>Home</li>
<script type="text/javascript">
cssdropdown.startchrome("chromemenu")
</script>
</div>
</body>
</html>
In your CSS, you have a fixed width set for .chromestyle ul. Change that width to a %, and that should fix your problem.
The first answer to the article you linked provides you with the most reasonable solution: "You can wrap around the two divs with another div of a minimum width you want the page to be viewed in." There isn't much point in trying to fit a page to a 320x240 browser; scroll bars can't be avoided in that kind of resolution.
Something like this
.foowrap { min-width: 550px; width: 100%; overflow:auto; }
.foo { width:30%; float:left; }
<div class="foowrap">
<div class="foo">bar</div>
<div class="foo">baz</div>
<div class="foo">bum</div>
</div>
Then make sure that the total minimum width of the divs inside (class foo in the example) is not more than the min-width you set. Watch out for borders especially.
By the way, you have two </body> and you're using <center>, both of which are things you should avoid. This bit doesn't make much sense either: <br><tr>text/other</br></tr>