css make corner code example

Example 1: css rounded corners

/* Set rounded corners with border-radius property */

.class {
  border-radius: 4px;
}

.circle {
  border-radius: 50%;
}

Example 2: css curve table border

#rcorners {
  border-radius: 25px;
}

Example 3: corner border css

<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title></title>
  <style>
  #content {
  width: max-content;
  height: fit-content;

  background:
    linear-gradient(to right, black 4px, transparent 4px) 0 0,
    linear-gradient(to right, black 4px, transparent 4px) 0 100%,
    linear-gradient(to left, black 4px, transparent 4px) 100% 0,
    linear-gradient(to left, black 4px, transparent 4px) 100% 100%,
    linear-gradient(to bottom, black 4px, transparent 4px) 0 0,
    linear-gradient(to bottom, black 4px, transparent 4px) 100% 0,
    linear-gradient(to top, black 4px, transparent 4px) 0 100%,
    linear-gradient(to top, black 4px, transparent 4px) 100% 100%;

  background-repeat: no-repeat;
  background-size: 20px 20px;
}
  </style>
  </head>
  <body>
    <div id="content">  </div>
  </body>
</html>

Example 4: css chamfered corner

div {
  background: #c00;
  /* fallback */
  background: -moz-linear-gradient(45deg, transparent 10px, #c00 10px), -moz-linear-gradient(135deg, transparent 10px, #c00 10px), -moz-linear-gradient(225deg, transparent 10px, #c00 10px), -moz-linear-gradient(315deg, transparent 10px, #c00 10px);
  background: -o-linear-gradient(45deg, transparent 10px, #c00 10px), -o-linear-gradient(135deg, transparent 10px, #c00 10px), -o-linear-gradient(225deg, transparent 10px, #c00 10px), -o-linear-gradient(315deg, transparent 10px, #c00 10px);
  background: -webkit-linear-gradient(45deg, transparent 10px, #c00 10px), -webkit-linear-gradient(135deg, transparent 10px, #c00 10px), -webkit-linear-gradient(225deg, transparent 10px, #c00 10px), -webkit-linear-gradient(315deg, transparent 10px, #c00 10px);
}

div {
  background-position: bottom left, bottom right, top right, top left;
  -moz-background-size: 50% 50%;
  -webkit-background-size: 50% 50%;
  background-size: 50% 50%;
  background-repeat: no-repeat;
}


/* Ignore the CSS from this point, it's just to make the demo more presentable */

div {
  float: left;
  width: 50px;
  margin: 15px auto;
  padding: 15px;
  color: white;
  line-height: 1.5;
}

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Html Example