body {
  margin: 40px auto !important;
  max-width: 650px;
  line-height: 1.6;
  font-size: 18px;
  color: #444;
  padding: 0 10px;
  overflow-x: hidden;
}
h1,
h2,
h3 {
  line-height: 1.2;
}
/* Add small margin on smaller devices */
@media (max-width: 600px) {
  body {
    margin: 10px;
    font-size: 16px;
  }
}

a {
  text-decoration: none;
  color: #444;
}

a:not(.a-not-styled) {
  text-decoration: none;
  color: #18272f;
  font-weight: 700;
  position: relative;
}

a:not(.a-not-styled)::before {
  content: "";
  background-color: hsla(196, 61%, 58%, 0.75);
  position: absolute;
  left: 0;
  bottom: 3px;
  width: 100%;
  height: 4px;
  transform: translateY(4px);
  z-index: -1;
  transition: all 0.3s ease-in-out;
}

a:not(.a-not-styled):hover::before {
  bottom: 0;
  transform: translateY(-1px);
  height: 100%;
}