Css Property Border-Color Not Working

CSS Property Border-Color Not Working

By default the border-width is 0 and border-style is none

So you need to set them to border-width:1px and border-style:solid. You can combine all the border properties into one as below:

#box {
    border:1px solid red
}

css border-color does not work in Chrome

Chrome isn't setting default border styles. Try border:1px solid green;.

Alternatively, split it into invididual properties (functionally identical as above):

border-width:1px; border-style:solid; border-color:green;

How can I make the borders show? It's not showing

You haven't specified a border style.

Try replacing your border styles with this:

border: 10px solid #000;

See below:

.offers {
  display: grid;
  grid-template-columns: 32% 33% 32%;
  grid-column-gap: 20px;
}

.offers div {
  border: 10px solid #000;
  background-color: white;
}

.abouttext {
  color: black;
  font-size: 100px;
  text-align: right;
  margin: 0px;
  margin-right: 50px;
  padding-top: 20px;
  padding-bottom: 20px;
}

<div class="offers">
  <div>
    <h3>Access To A Massive Library Of Education</h3>
    <p>With Summit you get an unlimited selection of indepth, engaging content for free.</p>
  </div>
  <div>
    <h3>No Extra Payed Upgrades</h3>
    <p>Summit says no to any extra add-ons or premium upgrades with pay walls. Everything is all free and hassle free.</p>
  </div>
  <div>
    <h3>We Are Advert Free</h3>
    <p>We all hate adverts, especially when we are engaged in content. Summit is happy to inform you that we are advert free!</p>
  </div>
</div>

Why is border-color overridden by color?

Why is “border-color” overridden by “color”? .... border color renders as black, not red as I would expect, as border-color is set after color. Thoughts?

Your problem lies within how you've declared your border- properties:

border-color: red;  /* sets the border color to red */
border: 3px solid;  /* sets the border color to default (black) */

You're using the shorthand for all border properties using border, and since you didn't specify any color within border, it's set to the default color, which is black in this case, as defined by the color property¹. And since you're declaring border after border-color, you're over-riding red with black.

Simply remove border-color and specify any border color within the border property...

border-color: red;      /* <-- REMOVE THIS LINE */
border: 3px solid red;  /* set the border color here */

¹ "A <color> denoting the color of the border. If not set, its default value is the value of the element's color property (the text color, not the background color)."

HTML CSS :hover only border color not changing and only effects inner elements?

Wrong syntax caused by extra spaces.

Using .db: hover is incorrect, change it to .db:hover

and so on...

div.db {    font-size: 30px;    color: white;    margin: 5px;    float: left;    border-style: solid;    border-color: blue;    text-align: center;}
.db:hover {    border-color: red;}div.db:not(:hover){    border-color: blue;}
div.db img {    width: 220px;    height: 180px;}
div.db a {    text-decoration: none;}

<h3>Downloads:</h3>        <div class="downloads">            <div class="db">                <a href="null">                    <img src="wld.png" />                    <p>Windows</p>                </a>            </div>            <div class="db">                <a href="null">                    <img src="lld.jpg">                    <p>Linux</p>                </a>            </div>            <div class="db">                <a href="null">                    <img src="ald.jpg">                    <p>Apple</p>                </a>            </div>        </div>

Ion-toolbar border color not working-How do I use custom CSS properties from documentation?

As per documentation: use this css:

ion-toolbar{
  --border-color: red!important; 
  box-shadow: 0px 0px 0px 1px red;
}

In iOS toolbar have border in Android it have box-shadow.

Check Documentation:
https://ionicframework.com/docs/api/toolbar#borders

Border-color not working in IE

Define border first, then add border color.

td {
   border-bottom:1px solid transparent;
}

OR
Add in Jquery 'border-bottom', '1px solid red'

$('.button').on('click', function(){
    $('.tr').css('border-top-color', 'red');
    $('.tr').find('td').css('border-bottom', '1px solid red');
});

why don't you just change the border color of tr for exampe

$('.button').on('click', function(){
    $('.tr').css('border-color', 'red');
});

Fiddle

CSS Border alpha not working

You need to use background-clip on the element. If you don't use background-clip the border inherits the background color and then applies the border-color.
https://jsfiddle.net/a2bxzk7z/

.thisElement {
  background-clip: padding-box;
}

Display border on button not working (CSS)

You have missed border style i.e border-style: solid;

Instead of doing:

border-width: 3px !important; 
border-color: #000000 !important;

Make it in single line:

border: 3px solid #000000;

It is working on your site:

Border fix

Css Property Border-Color Not Working