App.css

:root {
  --primary: #000;
}

* {
  box-sizing: border-box;
  font-family: 'Roboto Mono', monospace;
}

body {
  margin: 0;
  max-width: 1440px;
  margin: 0 auto;
}

.container {
  max-width: 90%;
  margin: 1rem auto;
}

#title {
  text-align: center;
}

#error,
#loading,
#not__found {
  text-align: center;
  margin-top: 3rem;
}

/* error */

#error {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* loading */

#loading img {
  width: 70px;
  margin: 0 auto;
}

/* searchbar */

.searchbar {
  margin: 1rem 0;
}

.searchbar .row {
  font-size: 1.2rem;
  display: flex;
}

.searchbar .row input {
  outline: none;
  border: none;
  font-size: inherit;
  padding: 10px;
  flex: 1;
  border: 1px var(--primary) solid;
  background: transparent;
}

.searchbar .row button {
  border: none;
  outline: none;
  background: var(--primary);
  color: #fff;
  padding: 5px 10px;
  font-size: inherit;
  cursor: pointer;
}

/* pagination */

.pagination {
  list-style: none;
  padding: 0;
}

.pagination li {
  list-style: none;
  display: inline-block;
  border: 1px var(--primary) solid;
  margin: 2px;
  padding: 5px;
  min-width: 30px;
  min-height: 30px;
  text-align: center;
  cursor: pointer;
}

.active {
  background: var(--primary);
  color: #fff;
}

/* news section */

.all__news {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  grid-gap: 10px;
  margin: 30px auto;
}

.article {
  border: 1px solid var(--primary);
}

.article__body {
  padding: 1rem;
  word-break: break-word;
}

.article__title a {
  color: var(--primary);
}

.article__source {
  background-color: var(--primary);
  color: #fff;
  display: inline-block;
  padding: 5px 10px;
  margin: 0;
}

@media only screen and (max-width: 650px) {
  .container {
    max-width: 95%;
  }
  .searchbar .row {
    font-size: 1rem;
  }
}