activities.css

*,
*:before,
*:after {
  box-sizing: inherit;
}
.head {
  border-style: dotted;
  border-width: 10px 1px;
}
* {
  font-size: 1.9rem;
}
.four {
  width: 200px;
  height: 200px;
}
html {
  line-height: 1.15;
  /* 1 */
}

body {
  margin: 0;
}

.one {
  width: 200px;
  height: 250px;
}

main {
  display: block;
}

h1 {
  font-size: 2em;
  margin: 0.67em 0;
}

img {
  border-style: none;
  padding-top: 6px;
  border-radius: 30px;
  height: 50%;
  width: 60%;
}

html {
  background: lightgray;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 10px;
  text-align: center;
}

main {
  background: white;
  margin: 5rem auto;
  max-width: 112rem;
  padding: 5rem 2rem;
  width: 90%;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1 {
  color: rgba(0, 0, 0, 0.5);
  font-weight: lighter;
  margin-bottom: 3rem;
  text-transform: uppercase;
}

h1 strong {
  color: rgba(0, 0, 0, 1);
  font-size: 1em;
  font-weight: bold;
}

h2 {
  color: rgba(0, 0, 0, 0.5);
  font-size: 2.4rem;
  font-weight: normal;
  margin: 2.5rem 0;
  text-transform: uppercase;
}

p {
  line-height: 1.45;
  margin-bottom: 6rem;
}

button {
  background: transparent;
  border: 1px solid #000000;
  margin-bottom: 5rem;
  padding: 2rem 8rem;
  text-transform: uppercase;
  margin-top: 10px;
}

ul {
  display: grid;
  grid-template-columns: 1fr;
}

li {
  background-color: aliceblue;
  margin: 3.3rem;
  border: 2px black;
  border-style: solid;
  padding: 2px;
}

@media only screen and (min-width: 40.063em) {
  ul {
    background-color: rgb(225, 222, 222);

    grid-template-columns: 1fr 1fr;

    grid-template-rows: 1fr 1fr;
  }
}