designing a corner tab element

I'm aiming to create a triangular button in the upper-right corner of my website using fixed positioning. It will be an icon on top of a background color with a hover effect. I'm curious if it's possible to achieve this with an angled div or if I should use a background image instead?

CSS

#top-btn {
  position: fixed;
  top: 0;
  right: 0;
  background-color: red;
}

HTML

...

<div id="top-btn">icon</div>

UPDATE - visual representation. located in the upper right corner of the window

https://i.sstatic.net/CQ3nK.png

javascripthtmlcss

Answer №1

Enhanced design for triangle on the right with rotated text

Implement the border technique in CSS to generate a triangle shape: DEMO

HTML:

<div id="corner-triangle">
    <div class="corner-triangle-text"><a href="http://shop.mimijumi.com/" target="_blank"><span class="corner-triangle-firstline">Free</span><br>Shipping!</a></div>
</div>

CSS - make adjustments for triangle size and color in the comments; optionally, delete the transform: rotate(45) lines to prevent text rotation:

div#corner-triangle {
  display: block;
  width: 100px;
  height: 100px;
  border-style: solid;
  border-width: 0 200px 200px 0; /* modify for triangle size */
  border-color: transparent #da0039 transparent transparent; /* modify for triangle color */
  position: fixed;
  top: 0;
  right: 0;
  z-index: 99999;
  color: white;
  text-shadow: 0 0 25px 9px #fff;
  -webkit-filter: drop-shadow(0 1px 9px #000000);
  filter: drop-shadow(0 1px 9px #000000);
}
div#corner-triangle .corner-triangle-text {
  position: relative;
  font-size: 2.1em;
  top: 0;
  right: -90px;
  font-family: sans-serif, "Helvetica Neue", Helvetica, Arial;
  font-weight: 200;
  line-height: 1.1;
  -webkit-transform: rotate(45deg); 
  -moz-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
}
div#corner-triangle .corner-triangle-text span.corner-triangle-firstline {
  margin-left: 29px;
}
div#corner-triangle .corner-triangle-text a {
  color: white;
}
div#corner-triangle .corner-triangle-text a:hover,
div#corner-triangle .corner-triangle-text a:link,
div#corner-triangle .corner-triangle-text a:visited,
div#corner-triangle .corner-triangle-text a:active,
div#corner-triangle .corner-triangle-text a:focus {
  text-decoration: none;
}

Answer №2

Essentially, you can create a triangle by setting the width and height of an element to zero and then utilizing borders to form the triangle shape.

[]

For those interested in some sample code, check out this resource: https://css-tricks.com/snippets/css/css-triangle/

.arrow-down {
    width: 0; 
    height: 0; 
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;

    border-top: 20px solid #f00;
}

Answer №3

.triangle {
  border-width: 50px;
  border-style: solid;
  border-color: red red transparent transparent;
  position: fixed;
  top:0;
  right:0;
  width:0;
  height:0;
}

Check out the live demo on JSFiddle.

Answer №4

If you're wondering how to create a triangle on a webpage without using an image, you can use special HTML characters like ▲ &#9650; and ▼ &#9660;.

Another way to make triangles is through CSS. You can achieve this by setting an element's width and height to zero and applying borders on three sides, with two sides set to transparent.

.arrow-down {
    width: 0; 
    height: 0; 
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid black;
}

For more in-depth information, you can visit https://css-tricks.com/snippets/css/css-triangle/

Answer №5

Here is my creative coding solution:

.corner{
    width: 0; 
    height: 0; 
    border-top: 50px solid rgb(227, 37, 37);
    border-bottom: 50px solid transparent; 
    border-left: 50px solid transparent; 
    border-right:50px solid rgb(227, 37, 37); 
    float:right; 
}

.corner:hover{
    border-color: #A00404 #A00404 transparent transparent;
    transition: border-color 1s;
}

Take a look at the JSfiddle demo here

Answer №6

If you're looking for a simple solution, consider using a special character like this: ▴

However, you can't just copy and paste it. Use the code below to display it in your content:

&utrif;

While this character may not work in every situation, it's easy to customize with different styles like color, size, or background because it's just text.

Check out this link for a list of other characters you can use, depending on the font you're using:

http://dev.w3.org/html5/html-author/charref

Keep in mind that using this method may have limitations if you want to layer text or icons on top of it. There are alternative approaches for that purpose.

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