index.css

@import url('https://fonts.googleapis.com/css?family=Salsa');

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

a {
  text-decoration: none;
}

h1 {
  font-family: 'Salsa', cursive;
}

.container {
  width: 400px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.design-systems {
  width: 300px;
  padding: 0;
}

.design-systems li {
  list-style: none;
  padding: 10px 20px;
  margin: 10px;
  border: 2px solid rgb(255, 215, 0);
  border-radius: 10px;
  background-color: rgb(255, 250, 240);
}

.design-systems li span:nth-child(1) {
  width: 30px;
  margin-right: 10px;
  text-align: center;
}

.design-systems li img {
  height: 30px;
}

.design-systems li a {
  text-align: left;
  color: hsl(180, 25%, 25%);
  font-weight: bold;
  display: flex;
  align-items: center;
}

.footer {
  text-align: center;
  color: hsla(180, 25%, 25%, 0.5);
}