Question 183031 in CSS Question posted in
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CSS3 Question: How can I achieve a border tilted from the button?

I want to achieve a button where there will a border behind the button. I have gone through many methods but the closest one is Using Box Shadows the code looks something like this:

.button-with-bg-outline-shadow a{
    box-shadow:
   12px 8px 0 0px #042036,
   14px 7px 0 0px var(--e-global-color-a29f98a ),
   14px 9px 0 0px var(--e-global-color-a29f98a ),
   10px 8px 0 0px var(--e-global-color-a29f98a );
   transition: all .3s linear;
}

but the problem with this is when I have different background, I need to change colors in the box-shadow property and thus I need to write new CSS for every button separately.

Demo: https://imgur.com/j9BChj4

I want the area covered by the outline should be transparent so that I can reuse one element everywhere.

Tags:

2

Answers


  1. 0

    Create a pseudo-element by inheriting some of its parent’s properties. Then apply a mask to cut out the inner area.

    /* Only for example --> */ body { margin: 0; display: grid; place-items: center; min-height: 100vh; background: 0 0 / cover url('https://i.stack.imgur.com/tWGMC.jpg'); }

a {
  position: relative;
  display: grid;
  place-items: center;
  height: 127px; width: 606px;
  border-radius: 23px;
  font: bold 40px/1em sans-serif;
  text-decoration: none;
  color: #000;
  background-color: #ff0;
  transition: all 0.3s linear;
}
a::before {
  content: '';
  position: absolute;
  top: 23px; left: 23px; z-index: -1;
  height: inherit; width: inherit;
  border: 3px solid #0000;
  border-radius: inherit;
  color: #b2b2b2;
  background-color: inherit;
  --mask: linear-gradient(#000 0 0), linear-gradient(#000 0 0);
  -webkit-mask-image: var(--mask);
  -webkit-mask-size: 100% 100%;
  -webkit-mask-clip: padding-box, border-box;
  -webkit-mask-composite: xor;
  mask-image: var(--mask);
  mask-size: 100% 100%;
  mask-clip: padding-box, border-box;
  mask-composite: exclude;
  transition: all 0.3s linear;
}
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  2. 0

    Use :after + css variables + currentColor. This is funcy buttons 🙃:

    button {
  height: 48px;
  padding: 0 32px;
  border-radius: 24px;
  display: grid;
  place-items: center;
  border: 0;
  background-color: currentColor;
  cursor: pointer;
  transition: transform .4s;
  font-weight: 700;
  will-change: transform;
}

button:after {
  content: '';
  position: absolute;
  inset: 8px -8px -8px 8px;
  border: solid 2px currentColor;
  border-radius: inherit;
  pointer-events: none;
  transition: transform .4s;
  z-index: -1;
}

button span {
  color: var(--text-color, #fff);
}

button:hover {
  transform: translate(2px, 2px);
}

button:hover:after {
  transform: translate(-2px, -2px);
}

button:active {
  transform: translate(4px, 4px);
}

button:active:after {
  transform: translate(-4px, -4px);
}
    <button style="color: blue;">
  <span>Button Red</span>
</button>
<br>
<button style="color: lightblue; --text-color:black;">
  <span>Button Red</span>
</button>
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