My guess is that it’s to make sure that the selection is visible enough : most pages having a white background, a selection background set to the same color would not contrast at all. The :checked pseudo-class in CSS selects elements when they are in the selected state. To make it non-visible after the user clicks to select an option, you must set the display property to its "none" value. However, if your eyes are fast enough to catch a glimpse, you will see the background is set to Red from the . In the javascript snippet above, we are iterating over all options and adding click function, which changes selected option by adding .selected class. In our example, we set the display of our labels to "inline-block" and then continue styling by setting the background-color, padding, font-family, font-size, and cursor properties. You can change the background color and color of selected text by styling ::selection. Browser Support. The above example shows typical <select> usage. Go to Form properties > Advanced> More options. Only a few CSS properties can be applied to the ::selection selector: color, background, cursor, and outline. Frontend Masters is the best place to get it. I really liked it. /*with a little bit of styling and javascript, you can have a select box with coloured options*/ /*Note that size attribute = 2 or greater plays an important role here*/ <style> select option:checked { background: #ff9500 -webkit-linear-gradient(bottom, #ff9500 0%, #ff9500 100% . How to Style a box element in a container with a fixed width and set the overflow to "hidden". In the Styles panel, find the color, background-color, or similar declaration that you want to change. Then when you move to the next multi-choice select box on the same page and click an option there, then that one goes blue, while the option in the first select box goes back to grey (or whatever the "selected" color is set to by . HTMLのselectタグとoptionタグを使うと、セレクトボックス(プルダウンメニュー)を作成できます。このページでは基本的な使い方や、CSSでデザインを変更する方法を解説します。 If you try to style ::selection with a property that’s not on the list, then that property will be ignored. eg: select.decorated option:hover { box-shadow: 0 0 10px 100px #1882A8 inset; } Here, .decorated is a class assigned to the select box. How we can create a Combobox pattern using HTML CSS JS? The user can engage this state by checking/selecting an element, or disengage it by unchecking/deselecting the element. Where do I place this code? Select option styling doesn't work in Chrome (MAC OS X), but it will work in Firefox on all systems as well as Chrome (Windows 7). This browser support data is from Caniuse, which has more detail. To the left of the color, background-color, or similar value, there is a small square which is a preview of the color. We use a color picker tool to select a sample of the color we choose. Again, inside click function we are querying within clicked option (this in the snippet), in case we want to change event handlers to support multiple dropdowns on one page. I want all my selected areas to be red so I add a simple ::selection{ background-color: red } and everything works fine, but when I add links to my document there is always a line bellow the tag that still gets the default color. The CSS pointer-events property can be used to create individual