a {
  margin-bottom: -3px;
  margin-left: 0;
  margin-right: 0;
  margin-top: 1px;
}

b {
  background-position: top;
}

c {
  background-image: linear-gradient(45deg, rgb(255,0,0) 0, rgb(0,128,0) 100%);
}

d {
  border-bottom-left-radius: 2px 2em;
  border-bottom-right-radius: 1px 3em;
  border-top-left-radius: 1px 1em;
  border-top-right-radius: 2px 2em;
}

e {
  border-top-left-radius: 50%;
}

f {
  border-image-source: radial-gradient(circle 20px at center 25%, rgb(255,0,0) 0, rgb(0,0,255) 100%);
}

g {
  border-left-color: initial;
  border-left-style: initial;
  border-left-width: 1px;
}

h {
  border-right-color: rgb(255,0,0);
  border-right-style: initial;
  border-right-width: 2px;
}