HTML 格式錯誤
[英]HTML formatting error
問題描述
基本上目標是在這段代碼之間有 2 個主要部分。 1 左邊的部分是所有文本，另一部分是右邊的部分，頂部是屬性表，然后是表格圖像。
@font-face { font-family: UbuntuG; src: url('ubuntu-fonts/Ubuntu-L.ttf'); } body { background-color: #1d1d1d; } h1 { color: white; font-family: UbuntuG; font-size: 30; } h2 { color: white; font-family: UbuntuG; font-size: 18; } p { color: white; font-family: Arial; font-size: 16; } p_ANum { color: white; font-family: Arial; font-size: 10; text-align: left; } table, th, td { border: 1px solid #1d1d1d; border-spacing: 0; color: white; font-family: Arial; font-size: 16; } td { text-align: center; padding: 0; height: 48px; min-width:48px; } ul{ margin: 0px 0; } a { display: block; text-decoration: none; color: white; height:43px; line-height:43px; }
<html> <head> <title>Periodic Table</title> <meta content="??"> <link rel="stylesheet" type="text/css" href="theme.css"> <style> table, th, td { border: 5px solid white; border-spacing: 0; color: #1d1d1d; font-family: Arial; font-size: 16; } </style> </head> <body style="margin-top:20;margin-left:15%;margin-right:3%;"> <h1>Hydrogen</h1> <div align="right"> <table><tr><h2>Atomic Properties</h2> <td bgcolor=white><b>Atomic number</b></td> <td bgcolor=white>1</td> </tr><tr> <td bgcolor=white><b>Atomic Mass</b></td> <td bgcolor=white>1.007825 g.mol ^-1</td> </tr><tr> <td bgcolor=white><b>Electronegativity</b></td> <td bgcolor=white>2.1</td> </tr><tr> <td bgcolor=white><b>Densitys</b></td> <td bgcolor=white>0.0899*10 ^-3 g.cm ^-3 at 20 °C</td> </tr><tr> <td bgcolor=white><b>Melting Point</b></td> <td bgcolor=white>- 259.2 °C</td> </tr><tr> <td bgcolor=white><b>Boiling Point</b></td> <td bgcolor=white>- 252.8 °C</td> </tr><tr> <td bgcolor=white><b>Vanderwaals radius</b></td> <td bgcolor=white>0.12 nm</td> </tr><tr> <td bgcolor=white><b>Ionic Radius</b></td> <td bgcolor=white>0.208 (-1) nm</td> </tr><tr> <td bgcolor=white><b>Isotopes</b></td> <td bgcolor=white>3</td> </tr><tr> <td bgcolor=white><b>Electronic shell</b></td> <td bgcolor=white>1s^1</td> </tr><tr> <td bgcolor=white><b>Energy of first Ionisation</b></td> <td bgcolor=white>1311 kJ.mol -1</td> </tr><tr> <td bgcolor=white><b>Discovered by</b></td> <td bgcolor=white>Henry Cavendish 1766</td> </tr> </div> <div align="Right"> <img src="assets/H_atomic.png"> <img src="assets/H_mainpic.png"> </div> <span align="left"> <p> First element in the periodic table. In normal conditions it's a colourless, odourless and insipid gas, formed by diatomic molecules, H2. The hydrogen atom, symbol H, is formed by a nucleus with one unit of positive charge and one electron. Its atomic number is 1 and its atomic weight 1,00797 g/mol. It's one of the main compounds of water and of all organic matter, and it's widely spread not only in The Earth but also in the entire Universe. There are three hydrogen isotopes: protium, mass 1, found in more than 99,985% of the natural element; deuterium, mass 2, found in nature in 0.015% approximately, and tritium, mass 3, which appears in small quantities in nature, but can be artificially produced by various nuclear reactions. Uses: The most important use of hydrogen is the ammonia synthesis. The use of hydrogen is extending quickly in fuel refinement, like the breaking down by hydrogen (hydrocracking), and in sulphur elimination. Huge quantities of hydrogen are consumed in the catalytic hydrogenation of unsaturated vegetable oils to obtain solid fat. Hydrogenation is used in the manufacture of organic chemical products. Huge quantities of hydrogen are used as rocket fuels, in combination with oxygen or fluor, and as a rocket propellent propelled by nuclear energy. Hydrogen can be burned in internal combustion engines. Hydrogen fuel cells are being looked into as a way to provide power and research is being conducted on hydrogen as a possible major future fuel. For instance it can be converted to and from electricity from bio-fuels, from and into natural gas and diesel fuel, theoretically with no emissions of either CO2 or toxic chemicals. Properties: Common hydrogen has a molecular weight of 2,01594 g. As a gas it has a density of 0.071 g/l at 0ºC and 1 atm. Its relative density, compared with that of the air, is 0.0695. Hydrogen is the most flammable of all the known substances. Hydrogen is slightly more soluble in organic solvents than in water. Many metals absorb hydrogen. Hydrogen absorption by steel can result in brittle steel, which leads to fails in the chemical process equipment. At normal temperature hydrogen is a not very reactive substance, unless it has been activated somehow; for instance, by an appropriate catalyser. At high temperatures it's highly reactive. Although in general it's diatomic, molecular hydrogen dissociates into free atoms at high temperatures. Atomic hydrogen is a powerful reductive agent, even at ambient temperature. It reacts with the oxides and chlorides of many metals, like silver, copper, lead, bismuth and mercury, to produce free metals. It reduces some salts to their metallic state, like nitrates, nitrites and sodium and potassium cyanide. It reacts with a number of elements, metals and non-metals, to produce hydrides, like NAH, KH, H2S and PH3. Atomic hydrogen produces hydrogen peroxide, H2O2, with oxygen. Atomic hydrogen reacts with organic compounds to form a complex mixture of products; with etilene, C2H4, for instance, the products are ethane, C2H6, and butane, C4H10. The heat released when the hydrogen atoms recombine to form the hydrogen molecules is used to obtain high temperatures in atomic hydrogen welding. Hydrogen reacts with oxygen to form water and this reaction is extraordinarily slow at ambient temperature; but if it's accelerated by a catalyser, like platinum, or an electric spark, it's made with explosive violence. </p> </span> </body> </html>
1 個解決方案
解決方案1
1 2017-02-01 03:10:21
第一個問題是，不要在要彼此相鄰顯示的元素上使用 ID 或類。 這使得您的 CSS 很難定位。 我將通過添加類.left和.right在提供的小提琴中解決這個.right 。
下一個問題是您忘記關閉<table>標簽。 我已經在提供的小提琴中解決了這個問題。
第三個問題是，你既有background-color和color的white為你的表格單元格，使他們非常難以閱讀。 您最初沒有注意到這一點，因為您缺少表格的結束標記（這意味着未對其應用樣式）。 您可以通過將背景顏色或顏色更改為黑色來解決此問題：
td {
color: #000;
}
第四個問題是你真的想移動你的圖像，以便它們與表包含在同一個容器中，以便浮動按預期工作......
代替：
</tr>
</div>
<div align="Right">
<img src="assets/H_atomic.png">
<img src="assets/H_mainpic.png">
</div>
只需使用：
</tr>
<img src="assets/H_atomic.png">
<img src="assets/H_mainpic.png">
</div>
我已經在我的小提琴中解決了這個問題。
現在代碼已經修復，為了讓組件像你想要的那樣顯示，你需要給它們一個寬度，並將它們向左浮動，如下所示：
.left, .right {
float: right;
width: 46%;
padding: 2%;
}
有關工作示例，請參閱此小提琴。
希望這可以幫助！ :)
格式化HTML中的錯誤驗證
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