Tabellenpositionierung schlägt fehl

ChaosNe0

Hallo, ich bin noch ziemlich neu im Websitendesign mit HTML und CSS.

Also ich versuche ein Formular mit einer Tabelle zu verknüpfen, um die Eingabefelder bündig untereinander zu setzen. Das Problem ist, dass die Tabelle aber nur abhängig von der Fensterbreite zentriert oder vom horizontalen Zentrum nach links versetzt angezeitg wird.

Hier ist der Code für die Tabelle:

HTML

<div id="main">
    <form method="post" action="index.html">
        <table id="logintable" align="center">
            <tr>
                <td colspan="2">
                    <center>
                        <font color="white">Server:</font>
                        <select style="width:200px; text-align:center">
                            <option value="test1">test1</option>
                            <option value="test2">test2</option>
                            <option value="test3">test3</option>
                            <option value="test4">test4</option>
                            <option value="test5">test5</option>
                        </select>
                    </center><br>
                </td>
            </tr>
            <tr>
                <td><input type="text" name="login_name"  value="" placeholder="mc-nickname or email-address"  style="width:300px"></td>
                <td><label><input type="checkbox"  name="remember_me" id="remember_me">Remember  me!</label></td>
            </tr>
            <tr>
                <td><input type="password"  name="login_password" value="" placeholder="Password"  style="width:300px"></td>
                <td><a href="index.html">Forgot password?</a></td>
            </tr>
            <tr>
                <td colspan="2">
                <center>
                    <a href="index.html">Register new account</a><br>
                    <input type="submit" name="commit" value="Login">
                </center>
                </td>
            </tr>
        </table>
    </form>
</div>

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#main wird in einer korrekt verknüpften CSS-Datei definiert:

HTML

#main {
    min-width:            900px;
    width:                80%;
    float:                left;
    padding:            10px;
    text-align:            center;
}

Woran liegt das Problem und wie ist es lösbar?

MrMurphy

Hallo,

Zitat

Woran liegt das Problem und wie ist es lösbar?

Du mißbrauchst eine Tabelle zum Layouten. Das ist falsch und führt zu solchen Problemen wie von dir beschrieben. Also weg damit.

Weiterhin solltest du auf veraltete, unzulässige Elemente wie das center-Tag und das font-Tag verzichten.

Das br-Tag sollte nur in Ausnahmefällen benutzt werden.

Ich habe mal ein Beispiel-Formular erstellt. Dabei habe ich die Felder in einer mir sinnvoller erscheinenden Reihenfolge sortiert.

Das Layout habe ich Responsive gemacht.

Außerdem habe ich eine Datei "normalize.css" eingebunden, deren Inhalt ich dahinter poste. Die muss eingebunden sein damit das Layout funktioniert.

Also erst mal die HTML-Datei:

HTML

<!DOCTYPE html>
<html lang="de">
<head>
   <meta charset="utf-8"><!-- Schließende Slashes sind unter HTML5 nicht erforderlich, aber erlaubt -->
   <title>Formular Layout 01</title>
   <meta name="description" content="HTML5, CSS3">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <!-- Um alte IE HTML5-tauglich zu machen -->
   <!--[if lt IE 9]>
      <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
   <![endif]-->
   <!-- Links zu externen css-Stylesheets mit Basisangaben -->
   <link href="normalize.css" rel="stylesheet">
   <!-- <link href="https://necolas.github.io/normalize.css/3.0.2/normalize.css"> -->
   <!-- Internes CSS ("type="text/css" ist unter HTML5 nicht erforderlich) -->
   <style>
   @media all {
      /* Neue HTML5-Elemente für ältere Browser als Block-Elemente übergeben */
      header, nav, main, aside, footer, section, article, figure, figcaption, audio, video {
         display: block;
      }
      * {
         box-sizing: border-box;
      }
      html {
         font-size: 120%;
      }
      body {
         padding: 0;
      }
      form {
         font-size: 1.2rem;
         width: 600px;
         padding: 0.5rem 0;
         border: 1px solid blue;
         margin: 1rem auto;
      }
      form a {
         display: block;
         color: black;
         text-decoration: none;
      }
      .selectfeld,
      .textfeld,
      .checkboxfeld,
      .linkfeld,
      .buttonfeld {
         padding: 0.5rem;
         display: flex;
      }
      .selectfeld :nth-child(1),
      .textfeld :nth-child(1) {
         padding: 0.20rem 0;
         flex: 1 0 30%;
      }
      .selectfeld :nth-child(2),
      .textfeld :nth-child(2) {
         border: 1px solid black;
         border-radius: 0.2rem;
         flex: 1 0 70%;
      }
      .checkboxfeld :nth-child(1) {
         flex: 1 0 30%;
      }
      .checkboxfeld {
         justify-items: flex-start;
      }
      .checkboxfeld :nth-child(2) {
         flex: 1 0 70%;
      }
      .buttonfeld :nth-child(1) {
         flex: 0 0 30%;
      }
      .linkfeld {
         border-top: 1px solid blue;
      }
      .linkfeld :nth-child(1n) {
         background: linear-gradient(
            #fbfbfb 0%,
            #fbfbfb 5%,
            #f1f1f1 5%,
            #ebebeb 50%,
            #dddddd 50%,
            #cfcfcf 95%,
            #f3f3f3 95%,
            #f3f3f3 100%
         );
         text-align: center;
         padding: 0.1rem;
         border: 1px solid #707070;
         border-radius: 0.2rem;
         margin: 0.3rem 0.5rem 0 0;
         flex: 0 1 50%;
      }
      p {
      }
   }
   @media only screen and (max-width: 620px) {
      form {
         width: 100%;
      }
      .selectfeld,
      .textfeld,
      .checkboxfeld,
      .linkfeld,
      .buttonfeld {
         flex-wrap: wrap;
      }
      .selectfeld :nth-child(1n),
      .textfeld :nth-child(1n),
      .checkboxfeld :nth-child(1n),
      .linkfeld :nth-child(1n),
      .buttonfeld :nth-child(1n) {
         flex-wrap: wrap;
         flex: 1 0 100%;
      }
   }
   </style>
</head>
<body>
   <main>
      <form method="post" action="index.html">
         <div class="selectfeld">
            <label for="select">Server:</label>
            <select name="select" id="select" />
               <option value="test1">test1</option>
               <option value="test2">test2</option>
               <option value="test3">test3</option>
               <option value="test4">test4</option>
               <option value="test5">test5</option>
            </select>
         </div>
         <div class="textfeld">
            <label for="login_name">Login:</label>
            <input type="text" name="login_name" id="login_name"  value="" placeholder="mc-nickname or email-address">
         </div>
         <div class="textfeld">
            <label for="password">Password:</label>
            <input type="password" id="password" name="Password" placeholder="password">
         </div>
         <div class="checkboxfeld">
            <label for="rememberme">Remember me:</label>
            <div>
               <input type="checkbox" id="rememberme" name="rememberme" value="Remember me">
            </div>
         </div>
         <div class="buttonfeld">
         <input type="submit" name="commit" value="Login">
         </div>
         <div class="linkfeld">
            <a href="#">Forgot password?</a>
            <a href="#">Register new account</a>
         </div>
      </form>
   </main>
</body>
</html>

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und der Inhalt der normalize.css:

Code

/*! normalize.css v3.0.2 | MIT License | git.io/normalize */


/**
 * 1. Set default font family to sans-serif.
 * 2. Prevent iOS text size adjust after orientation change, without disabling
 *    user zoom.
 */


html {
  font-family: sans-serif; /* 1 */
  -ms-text-size-adjust: 100%; /* 2 */
  -webkit-text-size-adjust: 100%; /* 2 */
}


/**
 * Remove default margin.
 */


body {
  margin: 0;
}


/* HTML5 display definitions
   ========================================================================== */


/**
 * Correct `block` display not defined for any HTML5 element in IE 8/9.
 * Correct `block` display not defined for `details` or `summary` in IE 10/11
 * and Firefox.
 * Correct `block` display not defined for `main` in IE 11.
 */


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


/**
 * 1. Correct `inline-block` display not defined in IE 8/9.
 * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
 */


audio,
canvas,
progress,
video {
  display: inline-block; /* 1 */
  vertical-align: baseline; /* 2 */
}


/**
 * Prevent modern browsers from displaying `audio` without controls.
 * Remove excess height in iOS 5 devices.
 */


audio:not([controls]) {
  display: none;
  height: 0;
}


/**
 * Address `[hidden]` styling not present in IE 8/9/10.
 * Hide the `template` element in IE 8/9/11, Safari, and Firefox < 22.
 */


[hidden],
template {
  display: none;
}


/* Links
   ========================================================================== */


/**
 * Remove the gray background color from active links in IE 10.
 */


a {
  background-color: transparent;
}


/**
 * Improve readability when focused and also mouse hovered in all browsers.
 */


a:active,
a:hover {
  outline: 0;
}


/* Text-level semantics
   ========================================================================== */


/**
 * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
 */


abbr[title] {
  border-bottom: 1px dotted;
}


/**
 * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
 */


b,
strong {
  font-weight: bold;
}


/**
 * Address styling not present in Safari and Chrome.
 */


dfn {
  font-style: italic;
}


/**
 * Address variable `h1` font-size and margin within `section` and `article`
 * contexts in Firefox 4+, Safari, and Chrome.
 */


h1 {
  font-size: 2rem;
  margin: 0.67rem 0;
}


/**
 * Address styling not present in IE 8/9.
 */


mark {
  background: #ff0;
  color: #000;
}


/**
 * Address inconsistent and variable font size in all browsers.
 */


small {
  font-size: 80%;
}


/**
 * Prevent `sub` and `sup` affecting `line-height` in all browsers.
 */


sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}


sup {
  top: -0.5rem;
}


sub {
  bottom: -0.25rem;
}


/* Embedded content
   ========================================================================== */


/**
 * Remove border when inside `a` element in IE 8/9/10.
 */


img {
  border: 0;
}


/**
 * Correct overflow not hidden in IE 9/10/11.
 */


svg:not(:root) {
  overflow: hidden;
}


/* Grouping content
   ========================================================================== */


/**
 * Address margin not present in IE 8/9 and Safari.
 */


figure {
  margin: 1rem 40px;
}


/**
 * Address differences between Firefox and other browsers.
 */


hr {
  -moz-box-sizing: content-box;
  box-sizing: content-box;
  height: 0;
}


/**
 * Contain overflow in all browsers.
 */


pre {
  overflow: auto;
}


/**
 * Address odd `em`-unit font size rendering in all browsers.
 */


code,
kbd,
pre,
samp {
  font-family: monospace, monospace;
  font-size: 1rem;
}


/* Forms
   ========================================================================== */


/**
 * Known limitation: by default, Chrome and Safari on OS X allow very limited
 * styling of `select`, unless a `border` property is set.
 */


/**
 * 1. Correct color not being inherited.
 *    Known issue: affects color of disabled elements.
 * 2. Correct font properties not being inherited.
 * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
 */


button,
input,
optgroup,
select,
textarea {
  color: inherit; /* 1 */
  font: inherit; /* 2 */
  margin: 0; /* 3 */
}


/**
 * Address `overflow` set to `hidden` in IE 8/9/10/11.
 */


button {
  overflow: visible;
}


/**
 * Address inconsistent `text-transform` inheritance for `button` and `select`.
 * All other form control elements do not inherit `text-transform` values.
 * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
 * Correct `select` style inheritance in Firefox.
 */


button,
select {
  text-transform: none;
}


/**
 * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
 *    and `video` controls.
 * 2. Correct inability to style clickable `input` types in iOS.
 * 3. Improve usability and consistency of cursor style between image-type
 *    `input` and others.
 */


button,
html input[type='button'], /* 1 */
input[type='reset'],
input[type='submit'] {
  -webkit-appearance: button; /* 2 */
  cursor: pointer; /* 3 */
}


/**
 * Re-set default cursor for disabled elements.
 */


button[disabled],
html input[disabled] {
  cursor: default;
}


/**
 * Remove inner padding and border in Firefox 4+.
 */


button::-moz-focus-inner,
input::-moz-focus-inner {
  border: 0;
  padding: 0;
}


/**
 * Address Firefox 4+ setting `line-height` on `input` using `!important` in
 * the UA stylesheet.
 */


input {
  line-height: normal;
}


/**
 * It's recommended that you don't attempt to style these elements.
 * Firefox's implementation doesn't respect box-sizing, padding, or width.
 *
 * 1. Address box sizing set to `content-box` in IE 8/9/10.
 * 2. Remove excess padding in IE 8/9/10.
 */


input[type='checkbox'],
input[type='radio'] {
  box-sizing: border-box; /* 1 */
  padding: 0; /* 2 */
}


/**
 * Fix the cursor style for Chrome's increment/decrement buttons. For certain
 * `font-size` values of the `input`, it causes the cursor style of the
 * decrement button to change from `default` to `text`.
 */


input[type='number']::-webkit-inner-spin-button,
input[type='number']::-webkit-outer-spin-button {
  height: auto;
}


/**
 * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
 * 2. Address `box-sizing` set to `border-box` in Safari and Chrome
 *    (include `-moz` to future-proof).
 */


input[type='search'] {
  -webkit-appearance: textfield; /* 1 */
  -moz-box-sizing: content-box;
  -webkit-box-sizing: content-box; /* 2 */
  box-sizing: content-box;
}


/**
 * Remove inner padding and search cancel button in Safari and Chrome on OS X.
 * Safari (but not Chrome) clips the cancel button when the search input has
 * padding (and `textfield` appearance).
 */


input[type='search']::-webkit-search-cancel-button,
input[type='search']::-webkit-search-decoration {
  -webkit-appearance: none;
}


/**
 * Define consistent border, margin, and padding.
 */


fieldset {
  border: 1px solid #c0c0c0;
  margin: 0 2px;
  padding: 0.35rem 0.625rem 0.75rem;
}


/**
 * 1. Correct `color` not being inherited in IE 8/9/10/11.
 * 2. Remove padding so people aren't caught out if they zero out fieldsets.
 */


legend {
  border: 0; /* 1 */
  padding: 0; /* 2 */
}


/**
 * Remove default vertical scrollbar in IE 8/9/10/11.
 */


textarea {
  overflow: auto;
}


/**
 * Don't inherit the `font-weight` (applied by a rule above).
 * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
 */


optgroup {
  font-weight: bold;
}


/* Tables
   ========================================================================== */


/**
 * Remove most spacing between table cells.
 */


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


td,
th {
  padding: 0;
}

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Gruss

MrMurphy

Edit: Am 13.08.2015 Quelltext überarbeitet: Links als Buttons gestaltet

Surenamba

etwas einfacher ausgedrückt solltest du wie MrMurphy sagte keine tabellen zum stylen verwenden sondern wie er die verschiedenen elemte in divs packen und über das css mit padding,margin,float........ stylen und positionieren

Tabellenpositionierung schlägt fehl

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