How can I use css properties with different classes? - html

Question

I have different css classes based on different actions. Everything is working good, but when I apply activeBackground class based on condition its making div background-color to green but border-left-color is not coming green its still using .arrow-div class. How can I resolve this issue and apply .activebackground class when needed?
HTML
<div class="text-arrow" ng-class="{'activeBackground': applyActiveFile, 'completeBackground':applyComplete}">File Selection
<span class="arrow-div"></span>
</div>
CSS
.text-arrow {
background-color:#BABABA;
color:#fff;
display:inline-block;
padding-left:45px;
}
.arrow-div {
border-style: dashed;
border-color: transparent;
border-width: 0.15em;
display: -moz-inline-box;
display: inline-block; /* Use font-size to control the size of the arrow. */
font-size: 100px;
height: 0;
line-height: 0;
position: relative;
vertical-align: middle;
width: 0;
background-color:#fff; /* change background color acc to bg color */
border-left-width: 0.2em;
border-left-style: solid;
border-left-color: #BABABA;
left:0.25em;
}
.activeBackground{
background-color: green;
border-left-color: green !important;
}

Answer 1

It appears to me that you're applying .arrow-div and .activeBackground to different elements, and the way your code is written, .activeBackground can't override .arrow-div because it's being applied to a different element (the parent). To affect the child element (the span containing the arrow) you need to set up a css rule that directly targets any child .arrow-div of .activeBackground.
My solution was to simply modify your css like so, providing a way to change the arrow div:
.activeBackground{
background-color: green;
}
.activeBackground .arrow-div{
border-left-color: green;
}
Here's a fiddle of it in action:
https://jsfiddle.net/cupno5g9/