Slanted Corner on CSS box

Question

I have been playing with CSS for only a short time and am trying to have a normal box but with the top left hand corner cut off at a 45 degree angle. Not a small amount eith

Answer 1

CSS3 linear-gradient() can draw this background.

background: linear-gradient(to bottom right, transparent 50px, blue 50px);

body {
  background: linear-gradient(red, orange) no-repeat;
  min-height: 100vh;
  margin: 0;
}
div {
  background: linear-gradient(to bottom right, transparent 50px, blue 50px);
  margin: 25px auto;
  padding: 50px;
  height: 200px;
  width: 200px;
  color: white;
}

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