*:focus {
  outline: none;
  box-shadow: 0 0 0 0.125rem #fff, 0 0 0 0.25rem #000;
}

body {
  padding: 1rem 2rem;
  font-family: 'Roboto', sans-serif;
  background-color: #fff;
}

h1 {
  text-align: center;
  margin-bottom: 1.5rem;
  font-family: 'Poppins', sans-serif;
  color: #444;
  font-size: 2rem;
}

li {
  margin-bottom: 0.75rem;
}

a {
  padding: 0.25rem 0.125rem 0;
  color: #765fe7;
  text-decoration: none;
  border-bottom: 1px solid #765fe7;
  transition: all 150ms ease;
}
a:focus, a:hover {
  background-color: #cbffd9;
  color: #6a51e7;
  border-bottom: 3px solid #6a51e7;
}

.accordion__button {
  text-align: left;
  font-size: 1rem;
  font-family: 'Poppins', sans-serif;
  font-weight: 500;
  background-color: #765fe7;
  color: #fff;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 0.25rem;
  display: block;
  width: 100%;
  z-index: 1;
  position: relative;
  margin-top: 1rem;
  transition: all 150ms linear;
}
.accordion__button::after {
  content: "";
  display: inline-block;
  position: absolute;
  right: 0.875rem;
  top: 0.875rem;
  width: 0.4rem;
  height: 0.4rem;
  border-right: 0.25rem solid #fff;
  border-top: 0.25rem solid #fff;
  transform: rotate(135deg);
  transition: transform 250ms linear;
}
.accordion__button:hover {
  background-color: #444;
  transform: scale(1.025);
}
.accordion__button[aria-expanded='true'] {
  background-color: #444;
}
.accordion__button[aria-expanded='true']::after {
  transform: rotate(315deg) translateY(0.25rem);
}
.accordion__content {
  padding: 0.875rem;
  margin-left: 0;
  background-color: #fff;
  border: 2px solid #eee;
  box-shadow: 1px 4px 10px 1px rgba(0, 0, 0, 0.15);
  transition: all 200ms linear;
}
.accordion__content[aria-hidden='false'] {
  display: block;
}
.accordion__content[aria-hidden='true'] {
  display: none;
}