Kevin Powell - Community•12mo ago

Any CSS Wizards? Gradient Animation around Pseudo Element

I have a pseudo element on my header/navigation & a gradient animation div - I am having trouble figuring out how to make the gradient animation div continue to look like it goes around the pseudo element. My initial thoughts were that I could create a pseudo element on the .gradient-border itself the same shape/slightly larger but I'm not too sure how that would work utilising border-top etc to get the shape & how I can make the animation effect look like it goes from left to right around the pseudo element. This is what the header:after element looks like:

.header:after {
    position: absolute;
    content: "";
    z-index: 10;
    left: 50%;
    bottom: -20%;
    color: #000 !important;
    -webkit-transform: translateX(-50%);
    transform: translateX(-50%);
    border-top: 20px solid #fffcf8;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    -webkit-transition: all .3s ease-in-out;
    transition: all .3s ease-in-out;
    height: 0;
    opacity: 1;
    width: 250px; 
  }

.header:after {
    position: absolute;
    content: "";
    z-index: 10;
    left: 50%;
    bottom: -20%;
    color: #000 !important;
    -webkit-transform: translateX(-50%);
    transform: translateX(-50%);
    border-top: 20px solid #fffcf8;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    -webkit-transition: all .3s ease-in-out;
    transition: all .3s ease-in-out;
    height: 0;
    opacity: 1;
    width: 250px; 
  }

This is the gradient div animation:

.seperator-wrapper {
  width: 100%;  
}
.seperator {
  width: 3000px;
  height: 5px;
  animation: rotate 5s infinite linear;
  -webkit-animation: rotate 5s infinite linear;
}

@-webkit-keyframes rotate {
  from {
    background-position: -3000px;
  }
  to { 
    background-position: 0px;
  }
}

@keyframes rotate {
  from {
    background-position: -3000px;
  }
  to { 
    background-position: 0px;
  }
}

.gradient-border {
  background: rgb(247,150,45); /* Old browsers */
  background: -moz-linear-gradient(left, #F7962D 0%, #D83E7A 33%, #62308B 66%, #F7962D 100%); /* FF3.6+ */
  background: -webkit-gradient(linear, left top, right top, color-stop(0%,#F7962D), color-stop(33%,#D83E7A), color-stop(66%,#62308B), color-stop(100%,#F7962D)); /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(left, #F7962D 0%,#D83E7A 33%,#62308B 66%,#F7962D 100%); /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(left, #F7962D 0%,#D83E7A 33%,#62308B 66%,#F7962D 100%); /* Opera 11.10+ */
  background: -ms-linear-gradient(left, #F7962D 0%,#D83E7A 33%,#62308B 66%,#F7962D 100%); /* IE10+ */
  background: linear-gradient(to right, #F7962D 0%,#D83E7A 33%,#62308B 66%,#F7962D 100%); /* W3C */
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#F7962D', endColorstr='#F7962D',GradientType=1 ); /* IE6-9 */
}

.seperator-wrapper {
  width: 100%;  
}
.seperator {
  width: 3000px;
  height: 5px;
  animation: rotate 5s infinite linear;
  -webkit-animation: rotate 5s infinite linear;
}

@-webkit-keyframes rotate {
  from {
    background-position: -3000px;
  }
  to { 
    background-position: 0px;
  }
}

@keyframes rotate {
  from {
    background-position: -3000px;
  }
  to { 
    background-position: 0px;
  }
}

.gradient-border {
  background: rgb(247,150,45); /* Old browsers */
  background: -moz-linear-gradient(left, #F7962D 0%, #D83E7A 33%, #62308B 66%, #F7962D 100%); /* FF3.6+ */
  background: -webkit-gradient(linear, left top, right top, color-stop(0%,#F7962D), color-stop(33%,#D83E7A), color-stop(66%,#62308B), color-stop(100%,#F7962D)); /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(left, #F7962D 0%,#D83E7A 33%,#62308B 66%,#F7962D 100%); /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(left, #F7962D 0%,#D83E7A 33%,#62308B 66%,#F7962D 100%); /* Opera 11.10+ */
  background: -ms-linear-gradient(left, #F7962D 0%,#D83E7A 33%,#62308B 66%,#F7962D 100%); /* IE10+ */
  background: linear-gradient(to right, #F7962D 0%,#D83E7A 33%,#62308B 66%,#F7962D 100%); /* W3C */
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#F7962D', endColorstr='#F7962D',GradientType=1 ); /* IE6-9 */
}

4 Replies

glutonium•12mo ago

i tink itll be better if u make a codepen

AdsyCOP•12mo ago

Can see here on dev preview: https://6v6c3kfpi1pxzxhm-55004168434.shopifypreview.com

Kevin Powell•12mo ago

My first try would be a clip-path on the .gradient-border. You'd want to have position: absolute The height is 5px right now, so I'd give it a height that's 5px taller than the white part that sticks down. Then add something like this:

clip-path: polygon(0 0, 100% 0, 100% 5px, calc(50% + 135px) 5px, calc(50% + 125px) 100%, calc(50% - 125px) 100%, calc(50% - 135px) 5px, 0 5px);

clip-path: polygon(0 0, 100% 0, 100% 5px, calc(50% + 135px) 5px, calc(50% + 125px) 100%, calc(50% - 125px) 100%, calc(50% - 135px) 5px, 0 5px);

The calcs in here are a guess and owuld need some tweaking.

AdsyCOP•12mo ago

Worked perfectly! Thank you so much, I didn't even think of using a clip-path (also didn't expect a response from the css god himself!). Managed to tweak the calcs and get it to a point where I was happy with 🙂 Also a note for anyone who finds this in future, had an issue where it was positioning to the far right and I was confused why. It was because the animation/width was set to 3000px (changed it to width: 100% & the keyframes to 0%/100% and it worked)

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Any CSS Wizards? Gradient Animation around Pseudo Element