styles.css

body {
  background-color: rgb(20 31 58);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  font-weight: bold;
}

h3 {
  color: #eaeaea;
  text-transform: uppercase;
}

hr {
  width: 100%;
  color: #eaeaea;
}

button {
  background: none;
  color: inherit;
  border: none;
  padding: 0;
  font: inherit;
  cursor: pointer;
  outline: inherit;
}

audio,
video {
  margin: 8px 12px;
}

audio:first-child,
video:first-child {
  margin-left: 0;
}

audio:last-child,
video:last-child {
  margin-right: 0;
}

video {
  border: 1px #eaeaea solid;
  width: 340px;
  height: 280px;
}

.main {
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
}

.section {
  display: flex;
  justify-content: center;
}

.button {
  display: flex;
  justify-content: center;
  padding: 17px 27px;
  background-color: rgb(46, 86, 204);
  border-radius: 40px;
  margin: 10px;
  color: #eaeaea;
  cursor: pointer;
  text-align: center;
  text-transform: uppercase;
}

button:disabled {
  pointer-events: none;
  opacity: 0.4;
}

.button i {
  margin-left: 10px;
  font-size: x-large;
}

.button:first-child {
  margin-left: 0;
}

.button:last-child {
  margin-right: 0;
}

.gradient {
  transition: 0.5s;
  background-size: 200% auto;
  background-image: linear-gradient(
    to right,
    #8a258d 0%,
    #4389a2 51%,
    #5c258d 100%
  );
}

.gradient:hover {
  background-position: right center;
  color: #fff;
  text-decoration: none;
}

.gallery {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 20px;
}