body {
  width: 100%;
  height: 100vh;
  margin: 0;
}

aside {
  color: #fff;
  width: 250px;
  padding-left: 20px;
  height: 100vh;
  background-image: linear-gradient(30deg, #0048bd, #44a7fd);
  border-top-right-radius: 80px;
}

aside a {
  font-size: 14px;
  color: #fff;
  display: block;
  padding: 12px;
  padding-left: 30px;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

aside a:hover {
  color: #3f5efb;
  background: #fff;
  outline: none;
  position: relative;
  background-color: #fff;
  border-top-left-radius: 20px;
  border-bottom-left-radius: 20px;
}

aside a i {
  margin-right: 5px;
}

aside a:hover::after {
  content: '';
  position: absolute;
  background-color: transparent;
  bottom: 100%;
  right: 0;
  height: 35px;
  width: 35px;
  border-bottom-right-radius: 18px;
  box-shadow: 0 20px 0 0 #fff;
}

aside a:hover::before {
  content: '';
  position: absolute;
  background-color: transparent;
  top: 38px;
  right: 0;
  height: 35px;
  width: 35px;
  border-top-right-radius: 18px;
  box-shadow: 0 -20px 0 0 #fff;
}

aside p {
  margin: 0;
  padding: 40px 0;
}